Based on a poll that I conducted here,
with nearly 200 people voting,
here are the results for the top 5 voted "best changes",
listed along with the percentage of the voters that voted for them:
#1 Overall class revisions 77%
#2 Skill rank system simplification 66%
#3 CMB / CMD combat maneuvers system 55%
#4 Feats gained every 2 levels 46%
#5 Skill amalgamations 40%
Next week is worst changes.
I bet it'll have a high voter count, yet I'd say overall people here are happy with the changes in general.