Monk has not really been tuned any since end of 5.3. We felt like it was fine. With very minor spell changes in 5.4 other than revival, chi burst, targeted expel harm, and rushing jade wind there was nothing changed. We felt that it was healing fine. Granted I know in proving grounds the amount you have to do as a monk is completely different than any other class. You have to dispel, interrupt, disarm, stun and CC as much as possible which allows monks to go very far. Without writing a whole script for that it is going to be hard to achieve crazy wave numbers with Oracle on that.
Granted I know that is not what a lot of people are talking about but, outside of our internal testers we did not get much feedback from monks pre 5.4. Now I know wulf has said before and i will say it again Play with the settings. they make a world of difference.