The weapons look cool, but like all the other ultimate weapons before them I don't have the time or desire to complete the tasks to upgrade them.
So this still doesn't make me want to buy Visions of Abyssea, mostly out of principle since Dynamis, Limbus and Einherjar all came free with their expansions.
What I'm waiting for now is that all the new Abyssea mobs will hold all the new BLU spells, and they will be super awesome like the Sea spells. It's bound to happen. =/