I've been trying this with some success today powerlevelling my druid, started the day at 58, now 61.5 after about 6 hours... Took a while to get going and get the technique down, but this is basically how I did it:
Group makeup:
Leader = mage 70
Druid = lowbie 58-61
Shammy x2 70
Priest = healbot 70
- So I get my group to SP, buff up, shield the druid, then have him leave the group.
- He then AOE's using r1 Hurricane the mobs (bogstrucks are a good start point)
- Quickly switch to the mage and AoE at the point where the druid is standing
- 60 secs to finish off the mobs mainly dpsing from the shammies
- Druid gets around 2.3k XP per mob
- Reinvite before the time is up.
Voila
Pretty good rate once you get the rhytum of it, but also boring after 3 or 4 runs.
Tried in HFR too, but the mobs are more ranged or caster types, so was more tricky.