Here's a "Lego brick" idea for increasing the storage of the trailer when configured as a camper. Using the current side/solid end panel molds, it would be easy to mold a second set of side panels, perhaps only 16" tall instead of the full height, and assemble those panels with a floor and side access hatches to form a "stackable" storage module. Since the top of the storage module would be identical to the top of the tub, anything that could mount on the top of the tub would also mount on the top of the storage module, like the flip-open tent platform.
The storage module could be added at any time, if you had already added the tent top to your basic trailer, no problem, the tent top would just go on top of the new storage module.
The storage module would be easily removable, so if you needed to use the trailer as a cargo trailer between camping trips, you could remove it.
The storage module could also be configured as a rooftop pod, so it could be used on top of the Jeep when you needed some additional storage but didn't need the entire trailer:
I've shown this for the short trailer, but they could be made in any length the basic tubs would be made.