I have been flirting around with the idea of a 5 druid group for PvE instead of my pally, shaman, 3x moonkin. My main motivation is just being bored out of my mind with the pally. Also, it would be tough to gear up 7 toons (5 druids, pally, shaman) with only 5 accounts and I'd likely have to resort to one druid tanking for PvE. I've planned to do 5x boomkins for PvP, but the question now is do I drop the pally & shaman and just start focusing on the two lowbie druids?

How easy is it to bear tank while doing a holy trinity (healer, DPS, tank)? Obviously I'll miss the pally buffs and shaman mana regen/reincarnation, but I actually enjoy druids which seems to be the point of playing games...

How viable is moonkin tanking in heroics if the moonkin is a JC, has full PvP gear for resil, and uses gems to get defense up more? If all other moonkins have the threat reduction, and strategically use shadowmeld, is it possible to hold aggro in moonkin form?