I agree that something more is needed to boost rotation. The way thrusters are working at the moment you need way more thrusers to gain rotation than you do to gain forwards, backwards and sidewards movement (To the extent where you need to dedicate most of your ship from the ground up to rotational thrusters if you want high rads)
Note: Im happy to dedicate a good amount of a ship i want to be manauverable to acheiving that goal, just saying that the ratios for different types of movement dont feel quite right.