Trying to learn first phase on this fight (and any fights but this one especially) its hugely demoralizing when over a 3rd of the raid time is standing there with thumbs up butts waiting for CDs.
I've heard of groups having to change their entire strategy if they involved HG or Living Dead since the cooldown reset is just unbearable.
Its so frustrating having get to together 8 from all around the world to spend so much time just standing looking at the boss waiting.
CD reset exists in SSS there is literally no reason SE can't take the time to implement this HUGE quality of life upgrade in its end game.