Advanced Job - Blue MageFollow

Any body remember the draw system of FFVIII? Well, thats what I would envision for a blue mage. A somewhat physical Class, like what RDM is to WAR, Blue Mage would be to Monk.

Here is the idea. Instead of having their own abilities, they would draw the abilities of the mob. Of course, at first it would be say, weaker, 15% of your level rounded up. then when you hit 15, it would drop to 10%, and at 30 it would be at your level. That would include Drain from bats, Heal from WHM mobs, and Bomb Toss from goblins, which would be an AOE...

I was wondering though, should it be strictly magical abilities, or all abilities? If was restricted to magical abilities, it would be such a weak class against non-magical mobs...

I think that they should be restricted to NIN/MNK/SAM type armors, maybe hand to hand, clubs and staffs for weapons, be similar to a monk in melee battle, but a little bit weaker.

What do you guys think? Any other ideas?