Quote Originally Posted by InvisibleBison View Post
Leaving aside the issues of implementation, I think this is a problematic idea because it unnecessarily limits the range of concepts that a martial character can express. In particular, it seems like this idea would make most gish builds impossible - you can't both be magic and anti-magic, after all.
How does this limit the range of concepts for martial characters? What kinds of archetypes are you thinking of that don't work with this idea?

The statement about Gish builds is an interesting point, but I don't know, I can think of a few concepts which disagree, but I suppose that's still something that bears thinking about.