I want this too, it's a neat idea for some TDMs. I was going to ask Greek2Me about it, like how much work it would be to edit it into slayer...
Also, I'm pretty sure in the old version it would disguise your clothes but not your name? When you disguise to that team, it should randomly select another person on that team to disguise as. I'll ask him about it sometime, although he's very busy with other slayer and irl stuff.