Another vote for KoTOR - which will never be by BioWare so give it up already. BioWare has said repeatedly that they are not interested in working on anything other than original IPs from now on. Given my understanding of KoTOR 2's release FUBAR and figuring it wasn't an experience entirely exclusive to Obsidian, I interpret BioWare's statement as a polite way of saying, "We are now successful enough that we do not need to put up with another glue-lubed deep-dicking from George Lucas so we won't kthxbai."
That said, every once in a while, I do a little Google for "Jade Empire 2" and cry a little tear because it's still nothing but I've-got-a-buddy-in-the-biz rumors, which, quite frankly, Mr. Rumor-monger and his "buddy" can eat my ass for continually stirring up the BioWare boards with a bunch of bullshit. I want to play another wu xia movie. So sue me.
I want another Dreamfall, but I want them to lease the Jade engine from Beyond Good and Evil, because their own "action" engine sucked. Apparently the developers got a grant from the Norwegian Film Fund or some such? [http://www.funcom.com/wsp/funcom/frontend.cgi?func=publish.show&func_id=1191&table=CONTENT&item=1004] To carry on the Longest Journey/Dreamfall story.
And yeah, Beyond Good and Evil, because that's what all the cool kids are saying and I never watched an afterschool special about peer pressure.