It's a paradox game, expect it to be missing a ton of content only available post-launch in 20+ expensive DLCs. Get a better business model Paradox, please consider condensing your DLCs into the base game eventually.
It looks like this is all of CS1 rolled into one base game with an engine upgrade plus QoL improvements, for only $50 I might add. I saw numerous features added by DLC in this trailer. Examples include: day/night cycle (After dark), industrial zoning (Industries), mixed transit hubs (Mass Transit), dynamic seasons (building on Snowfall), college campuses (Campus). I’m sure I missed some other details as well.