I can understand the concern of pugs not being able to clear the wall. Hell, I had problems with the wall when the game first came out. Looking back now, the problem was me because as a healer caster, I had to adjust my casting while avoiding purple and knowing when to stand in the middle for repel. Even if dps is not there, my group is able to kill the wall either by focusing on the bee or focusing on the wall. Tank must keep hate to give breathing room for dps and healer must keep tank alive long enough for the dps to do their jobs.