Greg the reason the decks do not come off is the Willie reason in that it adds weight down low in the center of the tractor.
Something I do not have is a JBJr as I already have a compact tractor wit a FEL for all that work, so I do not need a mini FEL. My little Kubota L185 does a great job with the small FEL that I have on mine.
I guess if storage space is tight then something like the JBJr of Swisher would be a idea. But for me a little Bobcat rented would be just as practical.