At the risk of sounding elitist, arrogant, and uninformed (having not gotten a chance to play the beta) this is the way Mages SHOULD ALWAYS HAVE BEEN, in every game, EVER. Unlike every other MMO where caster classes are cheap, overpowered, and nigh-unstoppable from a PVP standpoint, and just straight up ridiculous in PVE.
Anyone complaining about this has never played a cleric/wizard/sorcerer in a traditional PnP, read any non-dragonlance Fantasy literature or they played a Mage/Sorcerer in previous MMOs and have yet to recover from having their invulnerable rug pulled out from underneath them.
That being said, I'm sure that the possibility to be an absolutely amazing caster is present in the game. Whether or not "class veterans" have the skill and determination to bring out the potential is up to them.
On the other hand; if no one wants to play a caster/healer, it'll make me all the happier because I fully intend to and the less of us there are the more valuable we become ;P