A lil thought i'd been having, we all know Xemnas is the nobody of Xehanort. And that Xehanort is Terra and Master Xehanort combined, both keyblade wielders. So if Roxas can wield a keyblade being Sora's nobody, how is it Xemnas can't wield one being Xehanort's nobody? He still has some memory of past events, remembering Aqua through her armour etc. How is it Xemnas can't wield a keyblade?