The MP Regen is fine as it is, and possibly could use some drinks to boost it between fights. Out of Combat MP Regen does nothing except reduce downtime and allow mages to (gasp) actually use their spells in their fights like you would expect to mage to do, instead of spamming the no MP attack when their super long cooldown mp recovery abilities aren't available.

Personally I think anything that reduces downtime is a good thing, as it is there are far too many things in this game that reduce the time you're actually able to be out and about killing things, and the inability to passively regen MP was a big offender even for melee classes. This isn't "easy mode", it's "playable mode", since any time you're just sitting there waiting for a long cooldown to get the MP you need to use the basic functions of your class is time you're not actually doing anything useful.