I'm lukewarm about this because it is a nice option to have but players will take advantage of this system....

http://img197.imageshack.us/img197/910/example1f.png

http://img854.imageshack.us/img854/6198/example2f.png

Absurd.

If it's not going to be taken out all together (Which I would prefer) at least make it something like you have to be at least 3 levels from it, or something.