I haven't noticed any heroic bosses enraging, but i've only done 2 bosses so far. I'm mostly farming gold atm to get some upgrades and some alts into epic flying.

I use earthliving weapon on all 4. With that, riptide and unleash elements I never have to use any other heals. Rarely does the group need heals since the 4 totems do about 5k per tick.

I've also played around with 2 resto and 2 elem, like my old posts, to speed things up.

I've found that 4 resto is a mindless way to brute force trash and then I sometimes change specs depending on the boss. The endless mana and endless heals means you don't even have to dance on trash.

I haven't done any real pvp since tbc, but I was thinking about trying this out in there. I'd earthshield the 4 shaman and keep the pally as prot and slowly wear down people, but the lack of gear and the pain to get gear is keeping me in pve.

Personally, I find it hilarious making people used to instant killing really work 3-5 minutes to get a kill.