Low mass ships need less kN/m² per maneuvering thruster, because, well, they don\'t have to accelerate that much mass.
So you could make a 1000m ship turn quite fast, if ad-equate thrusters are mounted. That would be thrusters as big as the main engines.
So called \"reaction wheels\" are mainly used to stabilize and align satellites. Their \"reaction mass\" is no fuel, but rather their own mass. They are completely unusable in \"piloted\" spacecraft, since rotation acceleration is extremely slow + baaad \"attack and delay\". A SM-dreadnought would need reaction wheels almost as big as the dread itself. And those wheels need to be \"reset\" regularily.
The thrust, that a common fire extiguisher gives, is already enough, to spin a free in space floating 250kg man up to a speed, where he just will tear himself apart with his own centrifugal power.
Example: Hubble\'s reaction wheels may turn it about 2rpm
My extension:
Eventually add a maneuvering thruster block, that, well enhances maneuverability (only turnrate), but again raises mass, so less acceleration and less max speed. Could and would life with that
So you decide, if you build a small, fast, light and highly maneuverable fighter, or a bulky fat and slow cruiser, that though is able to turn quite fast, but has nearly no acceleration.
There must never be (I hope so) a 800m Dreadnought that outruns, outmaneuvers and outaccelerates a fighter o0