I like to imagine that if Lisker hadn't had such an ego he would've been a halfway decent ally for Sho and co (hey, a rhyme!) but would probably be none-too-reliable, what with his morality as questionable as Agito's and, indeed, his unreliable control medal. I imagine if he kept loyal to the good guys he would've lasted up to Mount Minakami. I imagine he would've had an Obi Wan death there whether he wanted to have one or not.