Yes, I have.
But it does not allow you to go under robots. Or aim mid-slide.
In fact, the slide could be part of the jetpack tree.
You can just normally walk/jetpack a jumping robot.
Unless you turn into like a ball kind of thing in metroid, I'm pretty sure the body can't slide between the robot legs.
It is a good idea though. Maybe instead of sliding, there can be a sliding kick. It can be activated while kicking during a boost/jetpack thingy.