I think that some power management tweaking could make things more interesting - maybe have some ships (like the viper) generate more heat at top speed to that they could not sustain it indefinitely.
I don't think anything can be done at all.
I think it's more a problem of the performance of the Viper compared to its price aka "Everybody has a Viper".
Once the game is released I expect there will be few players owning a Viper.
This or FD should really leave the path of the full speed with FA-Off. That way engine management will have sense again.