Why not let the PGL be a BLM for the magic attack bonus for siesmic shock? Use the equivalent of artifact armor to lock out classes. Optimized builds become self evident enough. Yes, your BLM wants nukes native to the weapon. Yes, your PLD probably wants a freakin shield. People are going to recognize what works best despite everything and run with it. *points at FFXI NIN/DRK* Let it happen!