Some of the updates are making me wonder if Sakurai is planning on having unlockables for the Characters, instead of just the Characters themselves. Possibly improvements to his/her attacks or abilities later on in the game. Such as the Glowing Master Sword for Link, or Fox's blaster. I think there's possibility of unlocking a better sword, or blaster, or much more with other characters later on in the game. This would probably unbalance Smash Bros unless he's planned far ahead of time. It would still be neat, and hopefully a turn on/turn off option. I have seen times when Link's sword looks very different, however that could just be different attacks.
Anyways, Just a thought :/
Anyways, Just a thought :/