The mistake of Season 10, is happening again. Another season of rewarding those who cheated, of making it too difficult to climb from low MMR and way to easy at high MMR.Matchmaking Ratings will carry over when Season 11 begins, but all Team and Personal Ratings will be wiped.
When those teams in S9 exploited their mmr so it got really high it had a widespread affect on other players. As anyone who faced that team then had their MMR affected because of that exploit. Or a team facing a team who before had gone against an MMR exploiter. Team A exploits to 3k mmr, Team B fights Team A and is rewarded based on that 3k mmr, Team C fights Team B and is rewarded based on Team B's MMR which is now higher due to Team As exploiting. Causing all teams to have MMRs that are the result of exploiting.
Not resetting MMR has been terrible for season 10. There has been a clear problem with teams sitting on high rating, who do not even have a positive win record. A problem with teams with relatively high win/loss not being able to climb past 2300-2400. A huge problem with the amount of teams around 2200 and the difficulty for low mmr teams to climb, even with good win/loss. I believe these problems are a symptom of the MMR abuse of S9, and the lack of a reset, and as we go into S11 it seems that it still won't be fixed.
Why do you think Blizzard is not resetting MMR? and How do you think it will affect S11?
Update:
They have decided to reset PR according to the Season 10 ending Blue Post as of 11-10-11 at 2:46 pst.
Glorious news! Sanity prevails for once.Matchmaking (MMR), Team, and Personal Ratings will all be wiped when Season 11 begins.