First H thing I think of is those random hook-ups at cons can be so much more fun actually screwing the character, instead of just the cosplayer.

I think that's going to have to wait for some quantum jumps in VR and teledildonics technology.

It's a good question as to what effect this would have on crossplaying. Is it as much of a shock to people if they can't tell you're a guy crossplaying as a gal or vice versa?