The thing is...Variks being a fallen was one of the things that made him unique. I'm not saying that I wouldn't mind more fallen allies and fallen vendors, I'm saying that the fact that he was fallen, his history, his hammyness, his ideologies, and secretiveness made him different from almost all other vendors. If such an idea like the one you are suggesting dies come to fruition, then these new fallen vendors will have to be different enough from variks so he could stay...well Variks. Did that make sense or did I just confuse you?