They would need to have it priced at the same price of hoop dee doo's cat 1. Well yes disney would be able to overcome any of the issues mentioned but it matters how much money it would take to retrofit the liberty belle. I think it would be cheaper and easier if they built a boat from scrap.
I agree that there isn't any issue mentioned above that can't be overcome with money. A new boat may not be cheaper. Liberty Bell is so detailed it is very expensive to replicate that sort of authenticity.
I would love to see them leave the Liberty Bell active for the kinetic environment as mentioned several times in this thread. A restaurant themed to the river could be added landside and made up as a customs house or "casino". A loop could be added at either end of the cresent loop for the Liberty Bell allowing it to continue to run. Access to the repurposed island could be around the side of BTMR.