Shield generator? I thought the general consensus was that was the bottom of a fusion reactor. Do you mean the two globes on top of the bridge-superstructure-thing? There's an ongoing debate about whether those are shield generators, sensors, or something else entirely. Imperator and Imperator II Star Destroyers have no flight decks or hangar bays except on the underside. I have to disagree with you Grand_Admiral_Thrawn, while the changes were made for gameplay reasons, they didn't need to make those changes. They could have spent more time to make a better game while at the same time preserving canonocity and "realism". F'ing LucasArts.