For me, this is Exactly why I looked into it. I was running some alts through VC and wanted to drop one char for a while cause he was a bit higher than the rest, and i wanted em more even for when I take em out as a 5 man grp, so I brought in someone who was nearby and asking to join. Then he had to get a quest, and we started clearing the way to the instance, and by the time we were there, something else happened, which I don't remember, so we just said screw em. Eventually he comes back and says "i cant get into the instance" cause he was like lvl 12 and didn't stand a chance. SO I had to go out, reclear for him to come in, and of course he runs around getting aggro, dying bla bla bla. I was like Damn, I'm soooo glad that I won't have to be doing this any more.