Hey again- Thanks for your interest! I agree all the extra animations would be really neat, but considering this particular asset pack is six years old and difficult to edit, I'd honestly rather make a new zombie asset pack. I can't promise that I would release a future zombie pack's Aseprite file to everyone, but since you have a unique use case I'd be willing to do an export of all the individual limbs for that future pack. Check back this October, maybe!
Agreed- Replacing colors is a big one for me since I do palette swaps of almost every asset I make. I do actually have that working already in the editor, and it does work across all frames. Looking forward to continuing to develop it further, but this summer my main project is a game!