I think mages can have something akin to MRD's steadfast... where when they stand steadily, they get bonus for WS, regular attacks, etc... and when they move, they will just have regular attacks with no bonus.

so, when mages stand still for 3 seconds, they can get a serenity where there will be a 10% bonus on magic potency, etc...

yah, people argue that praying and running is probably not the most pious thing to do, but hey, sometimes i do need to start praying when i run away from danger... standing there trying to pray while taking a beating is so much more counter-intuitive