When I look at our upcoming talent tree in Mists of Pandaria, I'm not blown away. Repentance and Divine Purpose are nearly identical to the versions in the retribution tree today. Pursuit of Justice and Speed of Light have been edited slightly but fulfill the same general roles. There are definitely some new talents in the mix as well, like Holy Avenger and the new Sanctified Wrath, but many of the choices are simply repeats of existing talents.
I have a few ideas on how to fix that. With equal parts of stealing talents from other classes and coming up with brand new ones, we could liven up our options quite a bit. I want to see more dynamic healing options available, rather than yet another cooldown like Clemency to manage. We spend most of our time in the trenches, pressing Holy Light and Holy Shock until our fingers are numb. Improving holy's style of healing will go a long way toward making the class more exciting to play.