>>246082143d model adds functionality, so that's a no-brainer compared to the rest of the list.
2nd choice would be to make redjuice wake up and actually do stuff like all the other artist "parents". Her design is fine, but she should frankly have 2+ outfit variants by now on top of her base.
If 2nd choice isn't possible for any number of reasons (be it the artist's interest, money, live2d riggers refusing to work with the art, whatever), take her design sheet and have another artist who will actually work redraw her and take over. Make up some lore nonsense to play it off.
