It already has spam protection built in from the health reduction, so if it's spammed people will be risking getting one hit killed.
I don't see why making it so it always adds speed would be the same as No Punishment For Slight Adjustments In 0g as using the grapple and holding directional buttons to adjust your position slightly are very different alterations in 0g conditions where using boost to increase speed at all times just feels natural.
Considering this why not have it be automatic then rather than an activated ability? If it's use is supposed to be as limited as just getting you up to speed why should the player have to enter a command to do so other than just moving in the direction they wish to move?
