If only Luke gained everyone's powers as he defeated them throughout the films.
Except Stormtroopers (they'd give him Terrible Aim).
Also the Rancor (it got beaten by a gate).
And...well, he actually didn't defeat Vader or the Emperor or Boba Fett, so he doesn't get any of those.
Hm. Maybe it wouldn't have helped Luke all that much.
Also, you can buy this in t-shirt form here.