Not a project lions can do on their own, but it occurred to the lion kingdom long ago that most of the space on modern airplanes is consumed by the luggage.  The overhead bins also seem to have grown as the number of passengers has increased & they need more & more stuff.  It's pure unscientific opinion, since airlines also charge a lot more for luggage & seem to have reduced the carryon size.

Lions have long wondered if it would be more effective to ship the luggage on separate flights.  They already do that sometimes, leading to very long delays in baggage claim.  If it became normal, perhaps the scheduling could be closer.