I feel like at one point there was some fluff somewhere for moving mechs w/o repair &/or drop pods attached, but still not as cargo & the bays were 100T each like heavy vehicles.
This seems like this would be something similar.
That said I'd really like to see some of the "alternate" configurations for canon dropships given RS at some point.
This isn't the first Mule conversion in fiction either IIRC.
SO some things that would be good to see.
Overlord-HQ (32 Mechs & HQ Deck/More Cargo)
Overlord-2 (24 Mechs, 12 Heavy Vees, +600 Tons Cargo)
Overlord-CV (42 ASF or 36 & 900 Cargo, we don't really know for sure what the CV looks like)
Union-CV (14 ASF)
Union-Cargo (2100 tons Cargo)
Union-MixedArms (No ASF, 4 Light Vee + Infantry Company)
Leopard-LtVeeCo (No Mechs, 12 Lt Vee Bays)
Leopard-MixedArms (No ASF, 4 Light Vee, Infantry Company)
Mule-CombatTransport (Convert 1-3 Decks over to Mech, Vehicle, Infantry Bays) (Again we don't know the stats but at over 2K per deck they could have 1-2 mech companies & battalion+ of mixed convetionals (20 Heavy, 8 Light, 4 Infantry Platoons)