Re: light/dark side points and diplomacy
Just remember if you do go down the dark path your character will change physically. I went from a sun tanned blue eyed jedi knight to having grayish white skin with red eyes. I also started to get the facial marks similar to the mob you fight at the end in Esseles.
You can turn this option off in preferences, so if you want to look pure to lure people in, you can do so. ;)
I found that option out on Sunday night right before the beta ended. I like the look as it was different, I will do the same when I create my jedi knight on the live server.