Originally Posted by
StrawberryZebra
While that does sound better than a toggle, it sounds like quite a clunky system. If the Seal is on the GCD, which current game design indicates it would be, then you'd be pressing an extra button whenever you wanted to use those empowered effects. That might not be so bad if you could fit it into an otherwise dead GCD, but if you wanted to apply the Attack/Cast Speed slow on BoJ, you'd have to stop your DPS to activate your Seal then BoJ to get the effect. That would get quite intrusive when you need one of those effects right now. Not only would you have the Seal CD to content with, but also the BoJ cooldown - Which can get thrown off if you get an Art of War Proc.
Adding Holy Power into the mix too just muddies the water even further. I've always considered that the optimal use case for most abilities should be something you can reasonably create for yourself. If its "Have 4 Holy power, a dead GCD just before Judgement to activate your Seal then Judge, use Templars Verdict as Blade of Justice comes off cooldown and use Templars Verdict again" I consider that to be something that is, predominently, out of the hands of the player in the current game. It might as well be "When the Stars align" for all the influence the player will have over it.
If there is a longer cooldown, say 30-45 seconds, then would there even be the need to tie them into specific skills? If they're going to be awkward and clunky utility cooldowns, then they're unlikely to get used if they're too impractical. In that situation it would be better for them just to be regular easy to use cooldowns, you're not achieving anything by making them harder to use.
On the other hand, having them off the GCD runs the risk of turning the class into a complete button bashing mess that wouldn't really do much to add nuance to the class. You'd simply use them on the skill that gave the highest DPS 95% of the time - It would simply be an extra button you push every X Seconds without much thought put into it. Those 5% of the time you use it on something different would be those strange edge cases, such as where you needed a utility effect that you weren't able to cover elsewhere. And between HoJ, Cleanse Toxins, Blessing of Freedom/Protection and Hand of Hinderance, there's not too many situations where one of those abilities wouldn't be an acceptable solution in a PvE environment.