[quote=@GreivousKhan]
<Snipped quote by MelonHead>

Actually, I ended up winning that match with the ninja because of semi- meta gaming my illusion. See I knew early on people meta game. Often without realizing it. But I needed to think of a way my illusions would still matter in the arena. So I devised that, through use of a single prep, my false image doppelganger could be replaced with a real me if it was ignored. 

Aside from thinking of some way to IC punish people who meta game, I'm not sure how well an illusionist would work in the arena.   
[/quote]

Well, the simple way to utilize illusions works in exactly that fashion, you use it to disguise the real threats, or just to generally mess with your opponent.