At least then I could romance Fawkes.
. . . Oh this is the night, and the heavens are right! On this lovely bella notte!I have mixed feelings about Bioware. Some of what they do is great: characters, particularly companions; and their gameplay tends to be well balanced and accessible without being too simplistic. However for supposedly "story driven" games I've yet to find one with a story that does much for me. Bioware also has a knack for choosing settings I dislike (Forgotten Realms) or don't really care about (Star Wars).
It has been a while since I've played a Bioware game. I never tried NWN's expansions (which I've been told improve upon many of the original game's faults without messing up what they did well) and between Mass Effect's initial DRM and apparently pseudo-Star Wars setting I never got around to it. I generally avoid looking up games in developement until they're quite close to release so I can't say much about Dragon Age. What I have seen looks cool.
If Bethesda had announced that Bioware was doing New Vegas I would certainly be interested, but I'm happier with Obsidian doing a Fallout game than Bioware.
But for all the talk of Oblivion and Fallout 3 being "open world" (and I'm still not entirely sure there's a unanimous agreement as to just what that means, exactly) I did feel that I had more (and more meaningful) choices to make in Mass Effect and KOTOR.
I'd expect a story-driven game to have more meaningful choices, there's a lot more developement control on where the player/story goes. Of course the advantage of an open world is you can have the story go in very different directions depending on your choices, so so far Bethesda has kept their main quests comparatively linear.
In my opinion an open world is one that allows two things. First, the main story line is optional. Second, you can access the majority of the game world for most of the game.
Let's use Morrowind as an example: once you leave the census office you can go pretty much anywhere. Some places are locked out, but if you want to go to Vivec, or the Ashlands, or Sadrith Mora, etc. it's up to you and they're all available. You can start and stop the main quest largely at your leisure (and in fact Caius prompts you to do adventuring outside of the main quest several times), or you can skip it entirely.
Alternatively in NWN while individual areas may allow some choice in exploration you are restricted to each area, and access/leave each area along a set path. If you're in the city of Luskan, or in the Forest, or in the time-traveling lizard fortress, you can't choose to jump to one of the other areas - unless the story takes you there.
Fallout 3 is smaller and a bit less open than Morrowind, but you still 99% of the capital wasteland at your disposal when you leave Vault 101. Your actions also have a greater effect on the gameworld. I know many people feel that FO3 doesn't go far enough, but it goes further than TES III or IV.