Speaking as a 1400-1500 rated player, I wouldn't be able to tell the difference between an 1800 and a 2300 teammate/enemy whilst playing the game myself (unless there was 1 of each to compare). I'm perfectly happy to have players like Blodir in my game, as long as the match is balanced and they can forgive my mistakes, but I do enjoy games more when everyone is below 1600.
A rating bracket system sounds alright, but not if the brackets are forced. Like if I have to play in the 1500+ bracket whenever I reach over that rating, I'm just always going to be the worst there and have no fun. With an optional bracket system it allows people who don't want to play with noobier players to opt out of those games, while still allowing those of us who don't mind playing with noobs as much to continue as we are. Those players who opt in will just have to accept the fact that imposing their own brackets will increase wait time.
Also, as a side note, whenever I get into a game where everyone is 1400/1500+, the map always seems to be 20x20, often with lots of navy, whereas the lower games are at least 75% land maps. Why is this, and can it be changed?