One of the things I don't understand is why front of the house ended up being Carla and Casey. Since Fabio's dish was basically done and ready for service, didn't require particularly difficult plating, and he's done well in a front of house position before, why didn't they send him up front? For that matter, given that he wasn't overly confident with Chinese food but knew he'd done a decent job at front of house before (unless I'm confusing him with someone else), it's odd that he didn't volunteer.
Mike Isabella expediting made sense, since he had immunity, but he didn't so much expedite as stand around yelling. Since he had the least to lose, why didn't he take charge more? If he'd screwed up, it wouldn't have hurt him, and if he'd done a good job, it would have helped him and the team--and gotten food out to hungry people, which is kind of the point in restaurant work. Tiffany F. tried to take charge, but it was too late, and no one was paying any attention.
I also thought it was unfair that Dale got nothing for winning the elimination challenge when other people have won trips to Italy and New Zealand (though Dale won the New Zealand trip, so at least he has that). They should either have prizes of approximately the same value for all the elimination challenges or not have them at all. It seems silly that Mike got immunity and a car for the quickfire and Dale got nothing for the elimination.