Bastilia was excellent. There were a few things I didn't like too much. But overall superb character at the right place and right time. The arrogance (and trying to contol it) coupled with the teasing (how she lost her saber in Taris and got captured) makes for some great fun. She has lots of spirit, yet you can poke holes and fluster her (especially while flirting). What's not to like? She's your little firecracker.
Maybe not one of the best personalities ever in the history of gaming, but one of the most capturing IMHO. There was much more going on than personality expression. Hard to explain.
BTW, why couldn't she escape her cage until after the swoop race? Was the Revan force bond the key to help her focus on pushing through?