High Keep bards?

[Halfcell]

So, because they are simply incredible XP, I have been soloing the bards in High Keep lately when I can get the camp on my 53 warrior. It occured to me the other day though that the faction I am destroying might be needed for something I am not thinking of.

Specifically I am worried about the epic. I checked the wiki and it doesn't seem like any of the NPC's for it are on any factions at all, but I am always a little suspicious of the wiki's accuracy. Any warriors out there that have done this camp and their epic that can help me be sure I'm not tanking a needed faction?