@Sylvain: Yeah, I think those 3 are the big holes left in the job systems currently, being time mage, blue mage/beastmaster, and dancer. Something like that for caster, tank, and healer would fill the combat system nicely.

@OMega: I think the key is that Haste only improves speed by a small percent, relatively speeking. Under the maximum conditions, my Time Mage idea allows a boost of up to 25% and usually it'd be less than that while Spacetime Warp cools down, at 10%. That number, I think, helps to limit the effects of lag and slow connections.