no more mmr
put bronze vs bronze silver vs silver gold vs gold etc
if at the higher levels the Q times are too long then go ahead and match them up with each other but there's no reason to have it in any of the lower ranks. If people are better than the bronze players they will beat them and they will move up until eventually they can't move up any higher. there is no need to put them against higher-level players and keep them down where they are.