Exactly, heck, ever wondered why the imps have a grappling hook in the first place? Easy. You want to enter the AT-AT, press the use button, he auto grapples and pulls himself in. You want out, he opens the door and absails out. You'd be vulnerable while in transit, but we're talking less than 5 seconds.
It'd be even cooler with hover vehicles because they could just jump in while the door pops open. I really dunno how it works with droids though, but even with Starships it'd be neat to be able to "pop the hatch".
Actually I'd love to see someone try to rush an "empty" AT-TE onlyfor the door to slide open and a full squad to come rushing out of it!
I am the definition of your defeat.