What do you want to come with this new revamp?

Make the stance effect of Infinity either passive, or make it a 100% rate; 50% stance on a skill you can have active 1/3 of the time at best is near pointless.
Give Buff Mastery (maybe Magic Mastery in Evan's case) the ability to protect from dispel at a certain rate; that way Mages still have to keep an eye on Magic Guard, but aren't always going to have to take the time to rebuff it when a boss casts dispel.
Make it so Meditation stacks, and maybe give it some other redeeming aspect so non-Mages can enjoy the skill as well.

Depending on how other class revamps go, asking for much more would be asking for too much.

I'd like it if Medi had a small MP cost reduction buff as well. It'd make it useful in a party scenario.