[quote=@ImportantNobody]
<Snipped quote by Rilla>

Why not fight a character who specializes in illusions with a character who can't detect them and I wouldn't meta game them? That would be...problematic. 
[/quote]

There are always going to be problems, just seems off to go in ahead of time with an ability to counter it. Sounds kinda metagamey to me. Like saying I wouldn't fight a lightning user without a way to ground myself.