There would be so much work involved going trans Atlantic, I doubt it is in the cards.
What are the markets going south from FLL and IAH not currently served?
4000 nm with 2 cabin 206 seats 97 tonnes MTOW.
<http://www.gcmap.com/mapui?R=4000nm%40FLL>
<http://www.gcmap.com/mapui?R=4000nm%40IAH>