Of course I can't show you a man in a lab coat saying THIS WILL HAPPEN! But you can see it with your own eye what happens to communities that are allowed to shut out entire groups of players. I always hate bringing up WoW but it's really prevalent there and it's also pretty bad in Ever Quest and Guild Wars if I had to name a few. Just because someone sounds good does not mean it's good. Can you honestly name a single name that lets you filter out entire chucks of the community that is not full of teeming full of toxic players? You'd be hard pressed to. If you want to be able to filter everything in a group down to the smallest detail, then play with friends.

PS: I'm arguing against the idea because it's toxic in nature. Yoshi P has already said those filters will never be a thing. =P So that's a weight off my mind.