Hey Spiritus - I just had to comment and say this guide rocks! I'm actually on your server in the guild Gravity (small world). I remember you being the one sitting on the mammoth ALL THE TIME in Ironforge lol. I was switched over from Holy to Disc after the patch hit after Disc got buffed, with my incentive, and our Holy Pally leaving. It was quite the "transition" but I'm really happy it worked out that way. My guild did make me do the AA spec for tank healing just out of randomness and had the other priest go with no AA for disc raid healing. For whatever reason, beside the fact that I'm quite a newb still with all the min/maxing stuff, the end result of using AA was just awful! Its such a blast in 5 mans but overly too clunky and random in 25 mans. If it was able to be used like a beacon it'd be great but until that happens I've stuck with a different spec.
What I found funny was that my spec almost mirrors yours except for a few differences and I simply put mine together out of sheer guesswork... Glad someone else is kinda thinking similarily. My guild was worried it wouldn't work without AA but it ended up being great! Now... obviously my Crit is just awful due to being holy and running away from crit but it looks like that has become viable again. I'm definitely going to reforge and get that fixed up for Tuesday to see how it works. I also will be getting the new Alchemy trinket after now confirming that would be a great trinket for me.
Anyways, I just wanted to say THANK YOU for finally putting up a guide for us healers wanting to get out of Holy with a good Disc spec. This will really help get me more fine tuned as I'm sure my character is a complete mess and now I know I can keep having a blast with Disc. Our set up has 3 healing priests (one holy raid, one disc raid, me disc "tank healing"/holy raid, druid, shaman, and holy pally). We've got quite the versatility and A LOT of priests and I'm glad this patch came around because we were ALL holy raid at one point which gets so redundant after awhile. But yeah, you rock and I'm always reading your posts to see what's up with the Disc tree! Thanks for taking the time to figure this out for us.
Sorry if my post is so jumbled... I'm inbetween classes burning up time.