I still personally think they should have gone with the maximum relative speed mode.... Ships flying solo and in open space can continue to accelerate indefinitely. However, in a wing flying together, they can accelerate together up to their maximum relative speeds to each other in the same 30km instance "bubble," that we see in RESs and CZs, the bubble moving with the centre of mass of the ships therein.
Once the ships come into contact with other ships' bubbles or the bubble surrounding a planet/space-station, the ships' frameshift drive activates to reduce the ships to safe distance.
That would have given the illusion of Newtonian flight but with short range WW2 combat as intended by DBOBE.
FFE
tries to do something like this, with a kind of partial FA-on effect, but it's weird and unpredictable, and frankly worse than FE2 for it.
The neat solution is actually just reference frame control - which is basically how it works in ED.
In ED, when you drop out of warp into a "real space" instance, your ship's velocity is zeroed relative to that instance - but the whole instance itself is still moving relative to other bodies in the system.
So all you really want is the ability to temporarily set your current velocity vector as your FoR - this 'virtual FoR' is then effectively an 'instance', in which you could then switch to regular "set speed" mode and dial in a few hundred meters / sec or whatever you were able to handle. So you'd instantly have FA-on for simplified dogfighting, even tho the whole furball is still moving at high velocity with respect to your navigational FoR.
Most ED players (the vast majority, by far) seem to think you'd need to come to a full stop relative to your navigational FoR before restoring FA-on control. Like i say, they're just incapable of grasping that motion is arbitrarily relative. Previous Elites educated players, and ED does the exact opposite.
In any event, the only 'speed limit' applied to a spaceship should be the one dialed in by the pilot. Depending on your loadout, the higher the 'set speed' you select, the more you'll 'skid', and thus the more incentivised you'll be to forget about FA-on altogether when in combat.. ie. learning curves, skillz development etc. etc..