Uhmmm. Let's see.
KotOR. Banter between party members, banter between PC and party members, party members inserting remarks in dialogue, sub-quests specific to some of the party members that open pathways for more character development. A far cry, if anything, from BD. As in, several light-years superior and filled with many more options. Multiple solutions for a quest, multiple endings. As story-driven as it gets, hey? KotOR also happens to be a pretty damn "mainstream" game; no one can deny its popularity, although I can't say I'm privy to the sale numbers. But it warrants a sequel, has raked up many awards (and presumably, money). 'Course, KotOR is a polished, polished product, to boot. Flawed, but nevertheless, it's not a piece with clunky interface, questionable skill progression, and bug-riddled skills. Not to mention that the voiceactors are actual professionals.
KotOR2 is in the making. NWN2, likewise. Both by Obsidian Entertainment, a team consisting of ex-Black Isle employees including, but not limited to, Chris Avellone. Y'know, lead writer of Planescape: Torment.
Bioware is making Dragon Age. Presumably, it'll be fairly story-driven.
False alarm, I think.
