i'll admit this is fairly limited in classes.. (i've personally only done this with my paladin).
But the quartermasters in AV hit for minimal damage, anywhere from 10-20 on my paladin who's still in the process of farming s1 holy gear..so hardly well geared. You can judge these with seal of light to occasionally heal you upon hit and voila... you shouldn't ever go below 98%-100% .. you'll be in combat preventing you from going afk, in the enemy base making it appear like your doing something, and you'll get some damage and healing meters showing to boot
alternitively, i assume this would work with a warlock and siphon life rank 1-2 as well.. though obviously that needs refreshing..
or shamans with earthsield once again needing refreshing..
for horde players, you can kite the quartermaster in to the bunkers to prevent arrows from the archers getting to you.. and for alliance.. well he's just at the right of the tower you run through (before getting in to the main base)..
if anyone finds any problems or tips for other classes, as i admit this is fairly limited.. please do tell.
simple, to the point, and effective..