I just bought a Pelican Air 1535 with TrekPak for travel purposes. This is the maximum size for carry-on and has the typical carry-on handle and wheels like any luggage would. It will arrive next week.
I will attempt to hold my 2 bodies, 3-6 lenses (no telephoto yet), and drone and all the accessories. I don't think I can fit my webill S gimbal, but we'll see.