I've been using ToonBoom quite regularly now, but mainly as a clean-up/colouring tool. I'm helping out a friend with his animation. Its been good so far, I've really appreciated the vectorization and paint bucket. Some things I could use:
- Assign unpainted to colour
- Merge colours
- default colour for bitmap vectorization
There are over 2000 cells right now, and I'm about halfway through colouring.