The main issue with levelling chars in Ramparts IS the speed of the dungeon and the lockout. I prefer to move on to BF as soon as the quests are done.

Personally, I have no issues dragging 4 chars on autofollow behind a mage through the dungeon and just using arcane explosion to kill everything as you run through. Casters sometimes will lag behind but if you pace yourself (and have a well-enough geared mage) that won't happen.

Pulling the entire Ramparts mostly into one pile after we get AOE looting sounds awesome.