Indeed. That really is the lamest criteria I have come across in many a long year. I have to say, I've never once thought with any play I've ever seen about dining with the leading characters. I guess it takes all sorts.
Also, I think all 4 leads would be interesting dinner companions for at least 1 dinner. But more importantly, I'd want to be at a dinner observing all 4 characters there together with me at dinner.