imo the format needed to be changed a bit due to a couple of reasons. #1: They have to give the solo person a chance to to win, As dmm is mostly dominated by clans/teams.
#2: It can become kinda stale doing the same thing all over again. I mean you see games like league of legends constantly changing items and metas and strategies constantly evolving.
I do think they have ALOT of things to straighten out before the winter invitational, I think the testing they done on this change was piss poor.