Should just wait and see what happens.

Depending on how the game is changed, when the tier III spells come out they could cost a lot of mp.

And Mp management is very situational. Siphon MP is worthless against undead, it wouldn't surprise me in on instance is nothing but undead. So all you will have at that point is Exaltation and Tranquility. If you spam heals and DD what are you going to do when you are out of mp Rely on the skills like Damnation? Are you really going to sit there with 0 mp, and say to your linkshell "I am just going to sit there till Tranquility is back up, cause I want the challenge of not having mp regen."

I use Tranquility when I lose Half my mp in an NM fight. Sure I could have used Siphon MP to regain some more. But timing it right with other skills by the time I have half mp again Tranquility is up again.