I have a lot of suggestions related to the slider limits/parameters and whatnot, but you probably intend on doing most of what I think there anyway so ill leave that.
However, the controls of the campera/panning I think could use some work. specifically there should be 3 pairs of keys for each dimension which you could increment/decrement for the camera and separately for the model.
I think the chat mode is a cute gimmick but wont be easy to add real depth to. I think the ideal use for this tool would be to generate models similar to honeyselect but which could be imported into common animation software. This could be extremely useful for developers who don't want to be stuck hand drawing animations or going with the koikatsu/honey select movie makers.