Either Arcane Protection needs to be fixed because it is broken or it needs to be more effective. As far as I can tell it doesn't do a **** thing, especially considering its a high lvl, 3rd class skill it SHOULD be as effective as the other skills that other classes get.
I love how they explain the changes to cancel on their own page:
6) The probability that Cancel will remove buffs and debuffs has been considerably reduced, and the reuse time has decreased from 300 seconds to 120 seconds.
That's a lie. It still lands almost every time and usually takes all but a few buffs off. Instead, they made it better by reducing it's reuse time, and giving all nukers a cancel and most of them two cancel spells.