For the first few lvls, my priest was drawing aggro - in the 4 shadowbolt/1 smite stage. But now my macros are set up so that the lock pets all attack at once, as the warlock dots are being cast. The priest does no damage cast (other than the initial pull)unless im fighting a boss. Then after the dots are on, all 5 characters /wand in usnison (wands are amazing dps at low lvls, heh). I don't worry about healing the pets unless I have a serious bad pull, and even then, all i really do is AOEfear, put a renew on 1-2 pets, get rid of the 1-2 mobs im focusing on (dps), and then worry about the others i feared.

Normally, my priest pulls with SWP, and i do it far enough back from the previous pull that a fearbomb is unlikely to pull aggro from the next group of mobs. The improved voidwalkers taunt does fine at maintaining aggro on 97% of pulls. This is of course coming from a lvl 33 group, so your results may vary.