Jeep owners buy Jeeps for their capability not fuel economy. My 2019 Longhorn has slightly better mpg then my 2017 Wrangler but can't go where my Jeep goes. Actually I don't want to take my truck where I take my Jeep.
I can say I originally didn’t buy my Jeep for its capabilities except for maybe in the snow, but my buddy got me into off-roaming and now I’m hooked
The gladiator bed is quite small @ only 5’ long. you might be able to fit a bike by taking front tire off don’t know how practical that would be! You probably could fit a smaller stand up jet ski. Send a picture of that setup curious to see what you come up with!