Going slightly off what Alkimi said,

All SE needs to do is put All Elemental Magic: magic affinity +5 (i think this is what it is called on the magian staffs) onto hvergelmir. Add a dash of magic acc and maybe some perp- for smn, and walla! You have an empyrean staff that rules them all and that is actually useful. Although I can see how this steps on Laevateein's, Nirvana's and Tupsimati's turf. If I had to choose, a staff to rule them all in terms of magical damage would probably be Laevatein. The lvl 90 version has a whooping 50 MAB! Which is a rediculous amount. Probably not as good inside abyssea with all the mab atmas, but outside... The 90 version will probably reach upwards to 60 MAB, not to mention the aftermath. With the job trait that makes our spells give us tp, get off weaponskills for the aftermath may not be all that bad. The only problem is that getting a mythic is probably the hardest thing to accomplish right now in the game...