In my game, the bills bug caused exactly what you said, small houses and mansions were paying the same, so i considered it a bug and was glad it was fixed, but i hope they look into your issue with taxes and items in small lots. I agree with you about other things too, and i also have club bugs but idk when are those getting fixed, it seems like not many reported having them. I got rid of all the social clubs in my game anyway, my sims were getting bored too often if i dont hold a gathering regularly and i dont like that. I want to play them whenever i feel like it and not be forced to hold a gathering just because.