I think that sometimes there is some confusion over two separate issues, (perhaps not but that's the impression I sometimes get), the first issue is the flight model proper - i.e. how it feels to fly, the implementation of mass, intertia and thr way the ships actually move compared to the position of their thrusters. The second issue is that of controller balancing, i.e. the old chestnut about the mouse flight/aim combo.
The actual flight model, although not perfect, is pretty much fine as far as I am concerned, yes it needs more work, but is certainly on the road to being decent enough.
The mouse flight/aim combo thing is a different matter - while this is still in it's current state, I will not be playing multiplayer - simply because I feel it encourages the worst kind of gameplay behaviour, that being of revelling in stomping those who choose not to play in a Hornet with 6 gimbals and use a mouse to simply exploit the OP mechanics that are currently in place, then brag about it via leaderboards, and make fun of those they stomp. Now, that statement is all about how I 'feel' the game is currently set up, which I think gives it an environment like COD, I don't want to play in that kind of place.
