From my teams perspective (melee team with 1 Enhancement shaman) I really like the Tremor Totem change, I use Earthbind for Earthen Power primarily so now that I can also use tremor reactivly during a fear for a team fear break is very cool! The Purge changes are pretty brutal though, with the mental quickness discount removed that takes the mana cost from ~1100 to 3500 (25k base mana pool) and ofcourse only removing 1 buff instead of 2.