Edit: @Smir: Couldn't agree more, but the playing for fun concept does not work, see S11. People camp rating to get titles most of the time. This way there is chance to play up in later season.
You forgot about the team rating boost by playing constantly. It is probably possible to reach 3.5-4k rating in arena over the course of the season. This means top-rated 3v3 will cap conquest point gains by doing arena.
If that is the case it will be weird to see people at 3.5k-4k rating. I also see problems if they implement the rating change mid-season as some teams are sitting and others are playing all the time. Would the sitting teams be punished when the patch hits?
Atm, there is not reason to que if you are like 2300+ because you get 10 min ques against 2k morons. If the patch hits and They get boost for playing all the time the way it is looking they could get rewarded for going 300-300 win/loss and pass a high rated team easily. I think putting a new system like this could be good, but not mid-season.
Also, if the mmr is going to get that high, almost all arena achieves will be pointless, it will be harder to tell good from bad.
Edited by djp771133, 02 November 2012 - 03:15 PM.