just remember in this game, a priest isn't supposed to do anything but buff and keep everyone healthy. so if you are at a point where that's useless to you, then switching is a good idea.
you really might want to keep her a priestess until she gets her top level spells tho. unless you have gone thru the game this quickly and have a handle on the last part's enemies and their horrific area attacks. imho, that's when you really absolutely need her. after all, its all geared to prepare your team for that last push.
as for the mage. the HP thing isn't a real biggie for me, because i always keep her well protected and far away from baddies. having no HPs is not a problem, ever, for me. esp since it can easily be offset by SPD/DEX/SNS. being hyper sonic fast, no one can lay a hand on her.
that's why a faerie mage is one of the absolute best class/race combos!
concentrating on all the mage's strong points, and keeping her FAST is essential. but that is something that needs to be focussed on from the start. by level 10, a faerie mage will be getting her Expert Skills and with good Speed, she's always first to do her thing. disabling is a great tactic. nothing quite like having her make every baddie in sight go insane. all you gotta do is sit back and laugh while they all kill each other off. as she and the baddies get higher in levels, her group spells get even more phenomenal.
anyway, there's a zillion ways to develop your chars, and work in class changes. just don't sell your chars short. there's periods where it seems like ALL classes aren't developing. patience thru those few levels usually pays off very well.
you should go to
jandrall's site, and read up on all the treatises on developing different char classes that have been written by Merkin, Atlus Seven and Boscher. essential reading!
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