Great contest with great puzzles! I can't say much about the scoring system since I didn't thought about it since it was pretty clear that I will probably never get any points.
Just two small remarks:
1.) Forcing feedback is always bad in my opinion. Especially in the exact moment after you finished the puzzle and want to see the results you get forced to press some emoji or whatever. You can bypass it, but for me it still feels annoying and the quality of feedback you get that way is questionable at best.
2.) The star system for quality feedback is also not good in my opinion, since a lot of popular sites use a 1-5 stars rating for difficulty (e.g. GMpuzzles and the LMG portal).