Also could be that JJB is Darth Plagueis, who is the sith who Palpatine is referring to when telling Anakin of the one who knew how to cheat death...Palpatine's master, who found Palpatine on Naboo. Plagueis was a Muun though.
If, in fact, Lucas originally intended Jar Jar to be an evil Sith, and then bailed between Ep. 1 and 2 due to fan reaction, than anything written after that point could just be considered part of the "revision."
It would be an enormous risk to Disney/Abrams to bring Jar Jar into Ep 7 though. While it could work, the risk of failure has to be too great for them to try it.
There is an easy formula out there to make them million (billions?) of dollars. New generation of heros, cameos by the original cast still living, a new Sith bad guy (or two) and a fight with the new good guys = print money.