Well, to my knowledge, Bioware ain't big on the killing-off of PCCs. Khalid and Dynahier were both killed off for the BG sequel, but they were both optional party-members, and everyone and their mom was killed off for K2, but that wasn't Bioware... Honestly, they're more prone to bringing the dead awesome back to life than killing the live awesome - both Sarevok and Aribeth died at the ends of their first game and came back for the sequel/expansion pack thingy.

...rambley teal deer rationalization is rambley, but you get my gist, no?