It would take a little imaginative thinking but there is certainly plenty of scope for Caribbean wildlife displays in zoos. I was thinking of a multi-species exhibit along the lines of Chesters 'Islands'.
An aquarium could feature reef fish, Central American cichlids and live-bearers and Cuban crocs.
Vivariums could feature rhino iguanas, Cuban boas, Hog Island boas, racers, anoles, geckoes, Hispanolan terrapins, Mountain chicken frogs, Cuban tree frogs etc.
Aviaries could display conures and Amazons, small finches and other passerines (Monserrat oriole). Waterfowl, flamingoes, ibis and roseate spoonbills in a walk-through zone.
The display could also stretch to showcase Central American species such as the howlers, capuchins, coati, raccoon, ocelot, tree porcupine, hutia etc.
Plenty of themes to work with: conservation of threatened species (many which are already in place), introduced species, evolution of the islands (poor species richness compared to South America), historical context (ex-territories), climate context (hurricanes, volcanoes). Wouldn't have to multi-millions to make it, but the powers that be would fail to see it happen because it lacks the wow-factor of a 'mega-species'. Need a Jersey to do something like it, in fact I'm surprised that they never did. Shame...
For any zoos out there - I'm willing to be paid to design your next big thing.