Here we are in December, and Colossal Order has yet to announce a second expansion for Cities Skylines since releasing the Campus expansion back in May. This will be the first year since the game's release that Colossal Order will only be releasing a single expansion. They have released some mini content packs, so there has been some new Skylines content -- just not a full-blown expansion.

	Expansion title	Original release
	After Dark	24 September 2015
	Snowfall	18 February 2016
	Match Day*	9 June 2016
	Natural Disasters	29 November 2016
	Mass Transit	18 May 2017
	Concerts*	17 August 2017
	Green Cities	19 October 2017
	Parklife	24 May 2018
	Industries	23 October 2018
	Campus	19 May 2019
* denotes a mini content pack, rather than full expansion.

But that doesn't mean that Colossal Order has abandoned the game. In fact, they've been very active on Twitter asking for people's opinions on what kind of new content we'd like to see. Most recently, they posted a tweet asking if we'd like to see buildings with seasonal holiday decorations (such as Christmas and Halloween). Earlier in the year, they also asked if we'd like to see mechanics for car wrecks or urban decay (among other propositions). Even though these ideas seem to have been positively received on Twitter, and lots of follow-up ideas were presented by commenters (including myself), no new expansion has been announced.

Colossal Order's Twitter account has apparently been fishing for new content ideas.

Though I wouldn't be surprised if Colossal Order announces an expansion before I'm able to finish writing and publish this blog post...

Personally, I've liked all the ideas that they've suggested, in principle. As you may know, I have some gripes with how Colossal Order has handled its expansions for Cities Skylines, so I would hope that any possible future expansion would try to resolve those lingering issues. So let's go through the ideas that Colossal Order has pitched on Twitter and see if they would be worthy of an expansion pack!

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Some of the suggestions from my first wishlist have actually been implemented in Cities: Skylines. Naming roads, and adding directional traffic overlays were recently added in the Mass Transit expansion, and the previous Snowfall expansion incorporated some of my ideas for seasonal cycles (minus the part where the seasons actually cycle from one to another). There's still a lot of items from that wishlist that haven't been implemented. I also have come up with some new ideas for things I'd like to see in further expansions (or maybe a sequel?).

Taking the best ideas from its competitors

Even though Cities: Skylines is, by far, my favorite (and probably the objective best) city-building / city-simulation game of the past decade, there are still some features and ideas from the inferior games that I really like. In my first wishlist, I already talked about how much I liked the modular building mechanic of SimCity (2013).

I won't go into too much detail of why I liked that concept (even though the actual implementation was a little weak) because I invite you to read the original post. Suffice it to say, I liked the idea of certain pieces of city infrastructure (such as power plants, schools, universities, police stations, airports, government buildings, etc.) actually growing along with the city. Being able to upgrade an existing building to add additional functionality, additional capacity, or to specialize it in some way, was (in my opinion) a much more interesting and engaging process than simply plopping another copy of the same building every so often, or adjusting a global budget slider, simply to meet increasing demand.

I still think SimCity had the right idea with its modular buildings.

In that first wishlist, I also briefly mentioned the Cities XL series. There isn't much in XL (or XXL) that is done as well (or better) than what is offered in either SimCity (2013) or Cities: Skylines, but I did neglect one idea that I think was probably the most clever, interesting, and fun part of the XL series of games: the ability to "fill" an area with "decoration". Put simply, Cities XL allows the player to fill any unoccupied area of the map (that is at least partially enclosed by roads) with one of several different types of decorative landscaping.

Landscaping options include a grassy park area with trees, an open-air "flea market" with kiosks and street vendors, various plazas / courtyards, and even a makeshift construction site. These decorations aren't functionally different (the flea market doesn't produce any commerce or jobs, for example), but each decorative area applies a very small environmental beautification effect that increases happiness and land value for adjacent homes or businesses.

Decorative areas in Cities XL allows you to fill-in irregular shapes with city-beautification projects.

From a more aesthetic standpoint, Cities XL's decorative areas allow the player to make very efficient use of space, to fill any empty dead space, and to create your own custom parks and plazas that conform to whatever shapes the outlining roads happen to be. Want a park in the middle of a large roundabout? Want a plaza space at the point of a 45-degree (or narrower) intersection? XL allows you to do such things without having to go into an asset-editor to make a custom ploppable.

Despite having muuuuuch better tools for creating curved and angled roads, Skylines doesn't really have any equivalent to these decorative features from XL that allow us to fill-in gaps left by our pretty, rounded or angled roads...

I really like Civilization VI! Of course, it has its share of nagging problems (some of which have been resolved already) - any game of this size and scope is likely to have issues at release. I've already been thinking of some ideas for how the game could be improved in expansions and DLC, and I'd like to spend a few posts to share some of those ideas with you now.

In my review of the game, I mentioned that oceans feel like they've regressed a bit since Beyond Earth: Rising Tide, in that they've returned to feeling like lifeless dead space on the map. Even though they're more important for Holy Sites and Campuses, mountains are also still mostly dead space on the map. They act as obstacles, and that's basically it. In expansions and DLC, I would like to see some of this space become more alive and useful. I'd like to spend this first suggestion post going over some ideas that I have for expanding the ocean mechanics, and for taking advantage of more of the map's dead space.

I have posted a link to this blog on Civfanatics at:
https://forums.civfanatics.com/threads/using-more-of-the-dead-space-in-the-map.610171/.
Feel free to discuss through the comments on this post, or via the linked forum topic!

Improve coastal cities

I'm very underwhelmed with coastal cities right now. Water tiles have very little utility. They provide small yield, can't have districts (other than a single harbor per city), and generally lack production. Coastal cities with lots of water are, thus, very unproductive and not really worth building. I think there's a couple ways to resolve this.

Harbors could provide a small amount of production. Or perhaps Harbors could act similarly to lighthouses from Civ V and provide production on sea resources. Or they could provide production on all adjacent sea tiles (so that placement is still important, and more of those empty sea tiles become useful and worth working, and you actually have to work them in order to get the benefit (as opposed to the Harbor just having an adjacency bonus). If we want to only use adjacency bonuses, then another alternative might be for Harbors to provide +1 production per adjacent coastal resource and +0.5 gold per adjacent water tile. That way, even cities that don't have clustered water resources can still have valuable locations for harbors.

Coastal and island cities lack production and have limited space to build districts.

Another way to improve coastal cities would be to have some more early policies that benefit coastal cities. Perhaps the Maritime Industries policy could be changed to "+1 production in coastal cities, and +1 production from Harbors". Alternatively, Maritime Industries could be similar to the Veterancy policy, and it could provide "+33% production towards Harbor districts and buildings for that district". Or we could have policies that do both! A new policy could be added that provides the bonus production for early naval units. Maybe there can even be a whole extra early-game civic (maybe called "Seafaring" or "Way-finding") that has some policies and buffs towards coastal and island civilizations.

The lack of production for coastal cities could also be offset by giving them more gold and/or food for growth (in order to support a specialist economy)...