In the Valhalla games interview, I read that there were complaints about KOTOR's dark side role-playing options being mostly petty and thuggish. I agree with this, but I also think the game's Light side role-playing options needed improvement.
Most of the light side dialogue options were too self-righteous and submissive. My worst was the dialogue with Juhani. If you wanted to turn her, then unless you had high persuade skill, the only dialogue options you could choose that would get her to cooperate were the most annoying and self-righteous ones like "The first step to knowledge is admitting you are ignorant." Now why the hell would I want to say something like that? Also, a lot of the dialogue options for light side suggest you have to agree with everything the Jedi council said, though there were some exceptions.
Basically just because you're light side shouldn't mean you have to be a goody goody. How about being able to play a more defiant light side Jedi, like Qui Gon, or someone like Jolee?