>If they could create a class for the deck then say they wouldn't do it that way for a reason, I would give them bonus points. But just to say no I'm not doing it because I don't like it wouldn't get any points in my book. It's just an interview question not a real application. No one wants to sit in an interview and scope out an application or even a screen in an application. Would it be any better if I say "How would you build a customer screen including the logical layers for me?"

I think both are good questions, especially given your fair treatment of the answers.