The only problem with the lightsabers, and it's not a big one by any means, is the lack of variation in use during combat. Lightsaber duels in the films ( and in the game trailers) were all about the moves that went with it, throwing in some variation on the moves in combat would really make it look good. Add some spins, leaps, flourishes with the blade. It doesn't have to have any affect on the actual combat mechanics, but making fights look more dynamic would be really nice.