Last few years I’ve been excitedly waiting for sequels from several small-to-medium sized studios that made highly acclaimed original games—I’m talking about Cities: Skylines, Kerbal Space Program, Planet Coaster, Frostpunk, etc.—yet each sequel was very poorly received to the point I wasn’t willing to risk my money buying it. Why do you think this happens when these developers already had a winning formula?
I’d argue the DLCs did more than you imply. The extra modes of transit gave more options to move people, painting a custom park area made cities feel more realistic than premade square parks, universities could be a great centerpiece for a neighborhood. Its not like vanilla was unplayable, but the DLC defintely added more creativity for me.