Obi-wan didn't fall through the floor....he merged with the Force the way some jedi do after they die. (except he wasn't dead at the time) It'd unbalance the game, but I'd love to see a Force buff for Jedi characters that makes your character glow and increase damage output 500% (the glow is from the shear amout of Force energey you are channeling burning away your body) to minimize the negative effects on game balance, the buff could drain your health while active.