It actually feels like your trying to turn around a sail ship, not like a space ship with engines and thrusters.
I played a single-player Star Trek ship game many moons ago, and one of the criticisms of it was that your ship handled like a starfighter, not a Constellation-class battlecruiser. The sequel addressed this: ships took time to turn, and they felt like big things with inertia. I never played it myself, but that was what was in the review.
Not having played a space MMO, I don't really know the conventions. How well does a starship handle?