BACKSTORY:
We've been clearing Karazhan a bit lately, and there's really only a handful of trash pulls and maybe two bosses (3, maybe) where an offtank is needed, so most of my time I'm in cat form for DPS.
Similarly, we have three healers, but really only need two for most circumstances.
Last time in, I switched to healing and still did my offtanking as needed. But I had trouble with threat/agro (missing FF & mangle, among others) while healing pretty well.
QUESTION:
Assuming that an offtank/sometimes healer/sometimes cat DPS is viable, what spec would work best? Or rather, what can I get away with not taking in the feral tree so I can maximize my healing (or vice-versa).
I was thinking a 0/21/40 build, to get the Faerie Fire ... but then I lose on the ToL... so I guess, like, is FF more important to an offtank than ToL is to an off-healer? Or the other way around? Or survival of the fittest? (but that's not REALLY needed, except maybe in netherspite)