The biggest thing is giving me a choice. If I go and choose to roll on just 1 toon thats my choice. Or if you made it clear that I only get to roll on one toon that's still my choice if I want to bring them or not. I can let you look for the other 3-4 dps just fine.
But if I bring them and you tell me I can roll on all and then change your mind then you just screwed yourself our relationship and will have to find more dps. It's all about the choice. You letting me make that choice on my own or you forcing the choice on me. I have long lists of ignored folks. I wish it was made simpler by an addon ingame but I keep pen and paper handy. My notebook is pretty large. Lol.