Honestly there was a perfectly good point in the game where it should imo have branched out in three paths. You could have gone with Chuck, gone to Abzi's party or continued with Evander. The Evander path could have continued as is (he could die or you could escape together), the Chuck path could either have you leave Manticore with Chuck or just replace Chuck with Evander in the kidnapping part and then there could be an all out evil route (heck perhaps even one where Abzi considers having you replace Soren).