I feel that this game will easily win the best mechanic. You said that you were heavily inspired by Sugar-Sugar and Portal 2, and yep, this is exactly what I would expect a combo of them to be.
The reverse blackhole tool felt a bit out of place for me, it felt like there was a genre shift whenever it appeared. However, I liked the levels significantly better than the rest. (Maybe make a game expanding on this mechanic specifically)
I will note that this game struggles when playing with a trackpad, it is nearly impossible on some levels.
