If you looking for further ideas, would you consider expanding your character generator to include portraits/face pics for dialogues? Even just a neutral facial expression would be great. This is literally the only thing missing to make a game with 100% lime_zu assets without any modification.
Dialogues are important for topdown RPGs. I'm learning to make them myself but I'm not good at this. But anyway I can survive without that. I'm happy with whatever you're doing. It's a suggestion just in case if you run out of ideas ;)