fatBastard()
Hello, I'm a Zombaholic
Oh, hell yeah. That would be fantastic. I haven't finished the game yet, but I'm sure it's not possible. However, Saren is an interesting character. I guess it's probably because of the prequel book Revelation that I read. He's a bit cliched to be sure, but the cold, mechanical efficiency with which he works is contagious, even though it looks like he's only doing what he's doing because he wants power. Siding with this "evil" side would be very interesting.
I'll try not to spoil anything, but once you play through the game you'll find out why joining Saren is not an option.
However, speaking of motivated evil: Saren's reasons for doing what he does is actually pretty darn believable. Misguided? Absolutely, but nevertheless very believable.