Correct. No one needs to stay in for Hour of Twilight and only tanks get Fading Light.

Yeah, I'll be the first to tell you that in LFR, its not always the tank that gets targetted. Its whomever has the most aggro. If your tanks are incorrectly using Heroic Will, it could be a dpser. Trust me, I've gotten it twice as a dpser and both times I was well below the tank aggro.

@VSUReaper

I'm sorry that you are too stupid to read the patch notes, or this site, or any other site that talked all about Raid Finder before the patch came out and then after the patch came out and even through the Paragon exploits. It was stated clearly and many times that you would only be eligible for to kill a boss in RF and get loot once a week, not kill until you get loot. Any failing in your understanding on how the system works is entirely your fault, since everyone else understood it after reading it once. kthxbai!

While it is like that in the runs to accustom people learning the run, people should follow instruction as if they were running an actual raid. Since they are similar in running, I understand maybe not everyone will run in normal/heroic but being properly executed should be everyones intention.

This will add more to the 5 second timeline, but it's worth mentioning, if you use Bartender or some other button mod, you'll want to go into the settings and turn on the "Extra action button"

Otherwise that heroic will button won't appear on screen and you'll be called Noob relentlessly for not pushing a button that wasn't even there.

Alternatively you could make a macro that says "Click ExtraActionButton1"

I went to Ultraxion for the first time last night and my Dominos install that I updated the day the patch launched had an "Extra" bar but I couldn't make the damn button appear on it. I was the tank. Got beaten into the ground by Fading Light a couple of times while I was trying to sort out the missing button.

Logged out, turned off mods, logged in, hooray! Button! Cleaned it up on the next attempt that the other tank was actually at the keyboard for.

Seems like the other tank wasn't noticing that Heroic Will zeroes your threat. THAT is the reason why a tank should stay in for Hour of Twilight. If the tank who has aggro hits Heroic Will to get out of Hour of Twilight, it's threat-roulette when everybody drops back in.

Tanks should be hitting taunt as soon as possible once the other tank gets Fading Light applied so that they inherit the other tank's threat before the other tank needs to hit Heroic Will.