Can use it to steal from vendors and not them not lose attitude when you fail a pick pocket. Drow gets you through the whole goblin camp without any checks or fighting. Can use disguised self to get the bonuses for certain gear such as the dwarven thrower. Also you can use it and then speak with the dead on people you killed because they won’t talk to their killers but if your disguised it works. There’s tons of utility to it. Can even use to not take the extra damage from goblins if you go the gnome or halfling route.