Mass Effect newbie armed mainly with spoilers and the first game here, but I'm picturing a lot of sidestories and interquels like they've been doing, even if that's a copout.

Also I am pretty sure Bioware designated canon endings for both KOTOR games when they wrote The Old Republic...not that it really matters since Revan switches sides more often than Revolver Ocelot. Bit odd given that when Obsidian wrote KOTOR II they left it up to player choice whether the Light Side or Dark Side ending of KOTOR I was canon, though, along with the PC's gender.