First of all, this is not FFXI so stop thinking of it like that or trying to make suggestions it be more like that. Secondly an hour is way too long. Consider using an ability and then wiping. Everything is reset back to before the fight began except your cooldowns. Do you really want to be without that ability for an entire hour after a run goes south? MAYBE a 10 minute cooldown, so it fits within the length of time that you can do it once during a fight if it goes well.