I think it should be Animal Crossing Maker.
That was the last 3DS one, you made houses for these things, I don't want to do that anymore, I want a game that's been designed, and we control bigger stuff like where their houses go, PWPs for the town, etc. The name I'd use is Animal Crossing: NeXt, as an homage to the NX being the system that sees it NEXT- get it?