I love the idea of Luke starting out like a spoiled brat and then slowly becoming a better man. The issue was that the development was...pretty sudden. It wasn't so much character development as two completely different characters linked by a haircut.
Just finished the game myself, and this was basically how I felt about it as well. And you'd think the fact that I never really considered Luke a jerk (especially compared to every other party member) would make me find his character development a bit more reasonable, but no, it still felt like two different characters.
That said, I liked the game overall.
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"The courtroom is the garden of holy judgment. Those with lechery in their hearts should leave this sanctuary at once!" ~Franziska von Karma