Make it so when you are selecting categories to sort by (ex: type of class, difficulty level) you can also check a box "only show classes I haven't done."

Very good Idea, I needed this filtrer but never found it.

The new ticks are great, but I wish they'd show a count instead how many times I've done each class. If we could also sort by this count we could see our favorite classes on one end and unplayed ones on the other!

love this one

This is a great suggestion!

Agreed. I find myself scrolling and scrolling trying to find a class I haven't done and I usually find one after 10 minutes of scrolling. Kinda frustrating.