I also hope that they'll let us build more "european" cities that aren't so horribly car centric and are more diverse.
Hopefully we also get a bit more diversity of gameplay - Skylines got pretty repetitive quickly with only challenge being traffic optimization. The new DLCs didn't really add that much to gameplay except different things to paint between roads. I hope things like universities, industry, agriculture, airports, etc. become a an actual challenge to build, fund and retain - maybe pull in some things from the Anno series to make it happen.
Hopefully we also get a bit more diversity of gameplay - Skylines got pretty repetitive quickly with only challenge being traffic optimization. The new DLCs didn't really add that much to gameplay except different things to paint between roads. I hope things like universities, industry, agriculture, airports, etc. become a an actual challenge to build, fund and retain - maybe pull in some things from the Anno series to make it happen.