Logan - yes, the turret is big! I think the main savings were in frontal area (narrower), 1 less crew member replaced by an autoloader, and enhanced crew survivability, with the commander / gunner being seated below the hull roof. But I think there's got to be a trade off in situational awareness, and that 4th crewman comes in handy for other vehicle chores. I think Stryker MGS might have the same-ish layout, so it may have been proven effective.