How do you guys handle having the one bad egg in the group? I have a party of five players who are all do-gooders except for one person. She likes to be the morally questionable person in the group, always using dark force pips to accomplish her goals. I've kept her character in check so far by putting the group in clear cut moral situations like saving orphans and rescuing villages from monsters to keep her above the dark side threshold on the morality chart.
The problem I see is as the campaign progresses, this character is going to be more and more problematic with the people they meet. I can see her turning into a Palpatine-esque character who solves their problems by shooting it with lightning. While this is all fine and good if the rest of the party wants to go evil, I don't see it working out as they start to meet Rebels and Light Side Paragons. What I'm really worried about is this creating a schism in the party where the Dark Side user becomes hunted by "good guys". This will put the rest of the party in a really bad situation where they have to chose between protecting their "friend" and being "good".
Maybe I should put them in that situation just to see what happens. What do you guys think?