I'm only worried by the cool down on fatigue. Hitting a fatigue point after eight hours (dwindling to zero exp. gain after 15 hours) isn't so bad. That's an awful long time to be grinding. My concern is more that it takes a week to reset the fatigue. Something like a 48-hour reset would be far more reasonable.

Similarly, if they find a use for surplus exp., it may not be so much of a bother. If they create a way to redeem your surplus exp. for something other than physical and skill ranks (I'm not quite sure what yet since anything I can think of would give an advantage to hardcore gamers), it might still be alright.

My biggest problem is that Square Enix is looking to punish the hardcore to accommodate the casual, and that's not cool.