Sigh.. you are really claiming HPallies are hated because a mana increased and a nerf to Tier set (when you out heal others even without the set?) Please just enjoy your class. You are in a very good spot, and Blizzard did these nerfs so that Pallies wouldn't so completely out heal the other classes that there is no point in bringing any other class.
You are fine. Enjoy it while it lasts. Don't complain about the small things. There are numerous topics on this subject.