I think it would be fun to have "single tool" modes so that you can play your favorite tool from start to finish. Such a polished game already though, super fun =)
That's such a cool idea. Different robot characters each one having a mechanical "hand" with a different power. You could even make it into a local vs mode where each character sends different types/patterns of garbage to the opponent acording to their power. Would be a nightmare to balance all the characters though!