I did foresee it as more a inertial dampening field than a propulsive field. If it works on the same semi-gravitational principles as speed drive fields it's also subject to the same limits.
We could say that all waved drives have the same IDF effect, constrained to the 'mass-evelope' of the ship (preventing the occupants going squish and the craft ripping itself apart) , but speed drives use a more powerful one to allow propulsion (which causes the frame drag I mentioned).
That'll limit the momentum of the ship (thus KE) by limiting what acceleration the ship experiences.
We could say that all waved drives have the same IDF effect, constrained to the 'mass-evelope' of the ship (preventing the occupants going squish and the craft ripping itself apart) , but speed drives use a more powerful one to allow propulsion (which causes the frame drag I mentioned).
That'll limit the momentum of the ship (thus KE) by limiting what acceleration the ship experiences.