How about a ewok Sith Lord thrown together with the Nests? Actually a "Twookie" would be better, for those who knows what that is.
Jacen Solo Should be turned to the Dark Side (quite reasonable with the things he did to protect Tenel Ka), and would eventually kill his sister in a duel. And Tenel Ka would die in Child Birth with yet another pair of twins. Luke would die fighting Jacen showing little Ben the way.
Its history all over again, shadowing its past.