PvP issue aside (I have zero interest in PvP) not being able to cast while moving, IMO, puts a lot more pressure on White Mages during difficult boss fights.

Basically, as a White Mage my job is to 1) heal the tank, and 2) stay alive. That means keeping myself open to healing the tank at all times, and avoid putting myself in danger or out of range because it jeopardizes #1.

When they took away our ability to cast while moving, I basically had to stop healing DDs much of the time even if I see their HP going into the red.

It's kind of funny, really. When the change happened I remember a lot of DD mains having a "take that!" attitude saying mages were over-powered. And now there's a nice long thread in the Conjurer/White Mage forum about not healing DDs. Two sides to every coin. ^^;