Add a sliding hinge. Basically a sliding component. It can be tweaked to be long or short. Allows parts to be connected and slide on each other. Like the sliding that happens in gears and landing legs. Useful in creating similar things and much more.
Also, if this makes it into development, I'd like the initial sliding position in the designer to be tweakable. Much like "Start Open" for cargo bays and landing legs. So you can start the slide all the way at the edge, or in the center.
Anyways, thanks for reading.
An option to curve the slider like the text would be make it even greater! But editor position is more important.