The Sylvanas fight seems like a group of people got together and came up with a bunch of cool ideas to make a fight that looks like a scene out of a movie.
And instead of paring those ideas down to the really good ones, and in a reasonable amount of time, they went with doing everything the committee came up with.
That said, cutting the fight down to 5 minutes is a dumb idea. The fight is what it is, has been nerfed enough at this point, and we are beyond overgeared as a general community at this point in the tier.
Well, to be fair to our very bad guild, we are all getting much older. Asking everyone to concentrate for 2 hours is tough. Rive will kill some of us, chains has killed us (more rarely since nerfs), lots of things in p2 can kill us, and then p3 is just terrible.
They used to fix this problem by simply making sure there was some autonerf function in the game–a trinket, a flat out bonus, something–and at some point they got stubborn about it. That just ended up making things terrible for everyone.
I don’t trust them with targeted nerfs. Sure, they’ve done some brilliant ones (the shaman fight in the Jaina tier, just adding a bit of space to the circle helped us impossibly). But they are slow on the gun and probably should not be.