Discussion for Deathwing should've checked References!:

Finally time for Deathwing's raid, Dragon Soul! A few of us had already sneakpeaked at the raid on the PTR and knew a little about the fights while others were seeing everything for the first time. The excitement turned to surprise when the first boss got oneshotted, and we had only one wipe per encounter on the next three bosses. Everything felt really easy, especially considering this is the last raid of the expansion! At the end of the night we had a few wipes on Ultraxion. Not because it was a hard fight, but rather because the tanks were Luria and Wilkas!
Observe: The effort put in to kill the first four bosses matches the effort the art department put into the screenshot from Yor'sahj the Unsleeping.

wow, those bosses sure look intimidating!

So WoW has upgraded itself to be like pacman? Maybe it's worth trying it again.