While I agree about the hard ending as most likely, Gilligan has a ripe opportunity where a plot line like Madrigal and the Czechs, and the relationship between international business and drug cartels and the Feds (CIA, FBI, DEA, AFT and their internal territorial conflicts) could spawn a great series where Jessie rises and falls in one transition season while new characters are introduced.
Gilligan could model Madrigal after CTs Madrigal Sound --- one of the few audio companies making audio equipment which pound for pound is worth more than Walt's meth. And their client list of drug lords and dealers and Hollywood agents.
Sent from my Lumia 920 via Windows 8. Now bite me Apple Droids.