Ranking
Wouldn't it differ drastically in different mods?

Anything that wouldn't let you move freely in wushu. (Wrists,legs, etc)
Anything that would compromise balance in aikido. (lumbar, abs, knees' etc)
Anything that would limit your defensive or offensive capabilities in tk. (Limbs In general, shoulders, hips.)

Not saying that joints important in one mod don't matter in another. Your at a disadvantage if you lose any joints in any mod, they're all important. Just some are more vital than others. Depending on he mod.

And I won't mention judo cause lolkjudo.
Spooky Scary Skeletons
Left breast.
The left one is always bigger than the right one

Edit: Left Pec*
i am the best in toribash
I'd say chest or hips.
Ryan is Straight {TGS} {Videoer} {Artist} Rip Dog