I've started to do some research on broken links in public transit in Florida. Some are very short, and won't cost much to get them connected as opposed to building another bankrupt toll road system.
For instance, did you know it is possible to connect from the Atlantic Coast at Daytona Beach all the way to Clearwater Beach on public transit service with only one exception? The broken link is through Plant City, as HARTline ends in eastern Brandon near Dover, and the closest connection is with Polk County's Citrus Transit on the county line just outside of the west of Lakeland.
Another broken link in the Tampa Bay area is south of Ruskin/Sun City, near the Manatee County line to Palmetto, along US-301, going right through Parrish and Ellenton.
Then there is another broken link through Charlotte county between North Fort Myers and Osprey/North Port along Tamiami Trail (US-41).
But one can connect all the way from Osprey at the south end of Sarasota County, all the way up the Suncoast to Spring Hill in the north end of Hernando County.
Take a look at all of the local transit maps and schedules. That cross-Florida routing mentioned does include taking SunRail between De Bary and Poinciana.