You could reasonably consider expanding the skill list a bit, and possibly increasing the skill points to 6 points per level. Rokugani samurai are expected to be knowledgeable on a variety of subjects, skilled conversationalists, talented artists AND capable warriors.
I'd recommend adding some additional class skills to better reflect the flavor of samurai from certain clans:
Crab: Knowledge (the planes)
Phoenix: Knowledge (religion), Spellcraft
Unicorn: Knowledge (geography)