you know it can be scripted in a way that it adds new settings to the options menu, so even with the script running you can turn its features on or off as desired. also it would need to be scripted in a fairly compatible way script wise. in other words its vars shouldnt clash with other scripts that mods may use. those considerations met, i see no problem with the script being added to the vps.
on the other hand the game sorely needs an input upgrade, and this kind of mouse flight should be part of it, along with lots of other features. all this should be done engine level too.