The Spirit Realm

If I were you, I would get spell casting mastery 3, do Reflexive Mastery, then get Combat Stability 3, and maybe Innate Defense. Then fill in AA based on your role/playstyle. DoD defensive AA has pretty low returns on AA spent. Sam has a chart here:

http://samanna.net/sham.info/aas.shtml

To do full Precog - you would spend 25 aa for 2% more dodgy (if I am reading the chart correctly).
To do CS3 + ID5 - you would spend 21 aa for 21% more mitigation.
Assuming I am reading the chart right

The gains get much smaller and the costs increase as you move higher up the expansions.


I do a lot of healing, so I did all my healing AA before I did Omens/DoD defensive AA, for example (I returned after a long break). Finish up at least radiant cure 3. If you're getting hit a lot, you might want to just go ahead and finish out those defensives. Or better yet, finish up spell casting subtlety, so you don't get hit anymore. I know this might be kind of out of the blue as well, but I also did Pet Affinity fairly early after returning, if you use your pet at all, this is an excellent AA. The pet becomes much more viable when he has high level buffs. I have never regretted spending those 12aa.

I got interrupted in the middle of my post and now I show up to the party 2 hours late

That means you need to drink fast to catch up.

If I remember correctly, the conventional wisdom on the old Monkly Business board was that Physical Enhancement was supposed to add 2% to Combat Agility, Combat Stability and Natural Durability each, which made it a very cost effective AA. The catch, however, was that it only kicked in in each area if you already had at least one rank of that ability. So if you had CA1, CS2 ad ND0 at the time when you got PE, then you would see your avoidance and mitigation both go up by 2%, but your HP would remain the same.

Having said that, the controlled mitigation parses that were done on the Test server with Sony's support about a year ago seemed to suggest that PE was not helping with mitigation at all and perhaps even hurting it. At the time, Sony checked the code and claimed that everything was working as intended and that it was just RNG fluctuations that were messing things up. I had my doubts at the time and then I stopped following the discussion, so I don't know if anything has changed since then.

Edit: Nevermind. It's under shaman AAs, even though this stuff is generic. =P