So I was thinking about everything that Xehanort said in DDD, and then it occured to me......
7 members of Light......
13 members of Darkness.........
The 7 Lights all have Keyblades, but the 13 Darknesses do not.
YET.
You cannot have a Keyblade War if only half the participants have Keyblades, can you? That would be an unfair match. Master Xehanort and young Xehanort have theirs, but doesn't that mean that the others: Xigbar, Saix, Xemnas, Ansem SoD, and etc. will eventually have to have Keyblades of their own? And with that being said, will Xemnas fight with two like Roxas? That would be quite a battle wouldn't it? I know it would be strange seeing Ansem SoD with a Keyblade since he already has that large creepy thing to do the fighting for him, but is it me, or is that thing not as powerful as it used to be? At the end of DDD, Donald and Goofy crashed into him, and that was enough to make him drop Riku and Mickey. Again, it's all just speculation....but I think that if Lea/Axel could go from two Chakrams to a Keyblade, then someone like Xigbar could also go from two guns to a Keyblade. Not to mention that the way Saix holds his Claymore is very similar to the way Ventus holds his Keyblade.