Bronzies vs Diamonds mode
This has probably been suggested before but it would be awesome to have for some period of time matchmaking of low ELO vs high ELO. Setting aside the negative connotation of high ELO players shaming and stomping low ELO players, I think it would help players improve and see mistakes by being directly matched to someone with superior skill. I think it would also help to curve some of that "elo hell" talk by making players realize that they are not Challenjour.