Is there a reason why our CDs need to be reset out in the field?

[Fated]

Here is the imbalance

Pick up mobs -> "Hallowed Ground", "Sentinel" -> EZ kill the mobs -> switch and comeback to PLD, go to next mob (Like 2 sec. to do) -> "Hallowed Ground", "Sentinel", other CD available again -> EZ kill the mobs -> ..... indefinitly ?? don't think that's a good idea

Edit : I take the PLD example cause i am one but i'm sure there would be other exploit like that with other classes CD like damage up or other things

Cooldowns that are used stay on cooldown even if you switch in a sanctuary. I'm not advocating that they change that. The only change should be to expand the behavior that is already in place from sanctuaries to the field itself.