So far from what information i have gathered about priests in Wotlk i have some concerns with the functionality of the PvP healing specs. No I am not in the beta, so i haven't tested out the class, but these are just some of my thoughts.
I started playing wow when BC came out so i am not to sure how many new talent points each tree received with the expansion, but as of right now the Disc tree is getting 20!!! new slots to spend talent points.
Some of the new talents.
Renewed hope and Aspiration seem like OK talents, but i don't think priests will have enough free talent points to spend on them.
Rapture seems like a really nice addition since we are far below other PvP healing classes as far as mana conservation is concerned. 5 points to max this talent seems rough, with only 10 new talent points available its a huge chunk. Maybe condense these into 3 points instead of 5. I'm not quite sure how much mana is going to be restored through PW:S so any info from someone in the beta would be nice.
Divine Aegis at first seemed like a cool talent, but when you think about it, the whole Disc Priest healing is centered around mobility, and most of our healing and or Damage mitigation is centered around instant casts which causes this talent to looses a lot of its lackluster. I'm not saying its a worthless talent, but it would be nice to see something more in tuned to the play style of priests. Try standing still and chaining Flash/G-Heal and see how long u last in arenas.
Grace looks like a really nice talent. The 8 second duration seems a little low but it can be worked with. This will add to our survivability and the survivability of our arena partners.
Borrowed Time Also looks really beneficial to Disc Priests. Stronger PW:S is always good and the spell hast is nice to. But again another Huge chunk of our 10 new talent points available. Maybe condense these into 3 points instead of 5
Penance Looks Awesome!! I'm hoping it will be as good as i think it is. 2 sec channeling cast isn't bad and i can live with the 10 sec cooldown if it is a strong heal.
Here are some of my ideas to better suit the Disc Tree
Giving us a talent that refreshes our Pain Suppression , Inner focus, Power Infusion, and possibly Divine Hymn spells. I know what your thinking but other classes have talents like this so it isn't unreasonable.
Instead of Divine Aegis give us a talent that Dazes enemies for a few seconds within X yards of you when your PW:S is dispelled or finished.
Martyrdom seems worthless now that spell push backs have been introduced (assuming priests have 2 points in Healing focus, but who doesn't), so maybe something like a passive 10/20% reduction of interrupt effects.
I really love the buff to improved spirit since it is worthless to PvP priests at the moment because we don't have spirit on our gear
I think that Fade should be buffed to remove all moving impairments on the priest (within the base spell), and maybe merging improved Fade into the improved Shadowform so that Shadow Priests don't get screwed.
Having said all of this I'm not saying make every one of these changes but maybe take a look at some of them and rethink where the Disc Tree is going. I have heard a lot of people say the Blizz wants to make Disc Priests a viable raid healer, but wtf..., if i want to heal raids i will respec Holy, not go as Disc (for content that requires Holy not heroics and kara or Wotlk equivalent).
Maybe I'm way off and Disc Priests will be unstoppable idno these are just my gut feelings.