The thing I don't like so much about Starships in recent years is their maneuverability. I'm speaking here mostly about 'Enterprise' and 'Discovery', the ships, in particular the Discovery, seem a little too nimble. There is a sense of realism to Starships that move slowly, turn slowly, as if they had a realistic mass to them that would snap if they tried to do any crazy stuff. Of course the Defiant did a lot of spinning and flying around, but she was a small ship, like the millennium falcon in Star Wars. Star Wars has kind of kept to this realism with Star Destroyers moving slow and clumsily. The JJ Trek films too have shown the Enterprise (at times) as a ship that has a real largeness to it that can't maneuver quickly. So my question is, at what size should a Starship not be able to do a loopdeloop? Is it ok for the NX to do a vertical roll? Or should it be for only smaller ships?