Throw my name into the SD camp as well. I never even considered it being the Executor before this conversation. I interpreted the scene as a fleet of Star Destroyers milling about, seen from various angles, when a large shadow dwarfs them, revealing the Executor to establish that the Empire is pretty much still in control despite that ugly Death Star incident a few years back.
Regardless, this is Adywan's project, and ultimately his vision of what ESB should have been. If he wants to put taun tauns in space, it's his right.
(I'm secretly hoping that he sneaks in another battle droid head into the scrap heap on Cloud City, like he did in the Jawa crawler in ANH:R)
