Could be paranoid, but i don't have any evidence to support or object aha. It would be something i could add, but would have to have all the conditions in which the mouse would have to be on the screen and then check if i should move it off or not.
for example sometimes you could drink a potion and that be it you can 'afk' then others times you will have to do something right after it like flick prayer. if i made it drink a potion -> go off screen but then it needs something else, it would be time wasted going off screen. would have to be a separate task of its own so it can decide if it should or not aha xd.
Possibly add a if mouse is still for such n such go off screen.
Its definitely possible, just not sure how easy it would be to implement xd. Will look into it.
Whatcha mean add yours? if you have purchased it just refresh your scripts and it should appear :P