I got a concern about making characters in the builder, particularly being the power to undo[especially if you make a huge mistake]
Normally, one can always fix minor mistakes, recolor miscolored pixels, but on the other hand, there’s cases where losing major sprite areas requires putting lots of extra time just to fix a mistake they couldn’t prevent.
Outside the sprite editor, there’s an undo button for moving a game’s background or objects.
There’s an undo button that can be used, but it doesn’t pertain to the creation of sprites.