Ideally, gliders can be as big as the towing plane (or bigger) and more than double your capacity. That'd require rather massive size increases if you want to s

Ideally, gliders can be as big as the towing plane (or bigger) and more than double your capacity. That'd require rather massive size increases if you want to squeeze it all into one plane. And bigger planes mean limits on what airports can be serviced. More weight per airplane puts even more limits on runways. (Just look at the A380's logistical tail.) On the lower end, this could service remote communities that can't "just" enlarge their airport. On the higher end, it might save airports billions to fortify and enlarge runways. At least in theory. We'll see how it goes in practice.