Last night i made a thread that got bounced out, i just wanted to get my ideas somewhere to build upon. So, let's try this again.
During heroic Garrosh, when Garrosh is defeated and the cinematic starts, it will go through like normal. EXCEPT, it continues after of where it cuts off in normal. I have no idea what could happen (Garrosh breaks free? takes the remaining power of y'shaarj and completely manifests? destroys stormwind harbor, and the battle continues?) could be anything. That what you guys will discuss here though
What could happen? I'm not saying it's a WHOLE different cut scene, or a spin off. The first Alliance/Horde ending cinematic's just aren't fully done yet, they don't explain exactly whats going to happen between and after the "trial" if he ever makes it there. Garrosh is a pretty tough figure, i think he doesn't want to be taken alive, and will find a way to continue the fight until death. Even if that's accepting all power of an old god to do it.