I guess Cities: Skylines is worth mentioning, both the first and the second game. The second game obviously has more notable issues, but honestly, I haven't looked back since the game released. It improves in some key areas for someone who played the first game with only relatively few mods. As for the first game, traffic was both the really interesting and fun part as well as the annoying part due to the terrible traffic AI, and otherwise the game was just way, way too easy. Still, the flaws don't really get rubbed into your face, so living with them is generally easy enough. But when the second game was finally released, I was so done with all the traffic issues and the duct tape holding the game together with all the mods all their own designs that didn't really match the vanilla game. I'm sure the flaws of the second game will also start to annoy me more at some point, but I'm hoping the game gets improved enough before that happens (and I'm quite confident that's the case).