Don't kill me guys. Just throwing it out there.
I think it may be interesting, and I know most, if not all, of us want ONE weapon that can be used for damaging. I think that it would be a good idea to make a Staff that uses the 99 versions of the Claustrum, Laevateinn, Hvergelmir, and all Magic Damage Staffs (Light and Dark Included). It would be a challenge, one that I think many people would be up for. Now getting into the stats that would be on this staff. I'm not exactly sure what should be on it. But it must be better than any other option we will have available for nuking. It would also finally introduce an endgame weapon that isn't laughable like the BLM relic/mythic/empyrean.