I'd really love a debate, even one per election cycle, where the moderator decided to really dig into responses, without concern about how many topics they needed to get to.

I think we'd be served so much better by giving each topic the time for a thorough response and discussion. Even if they spent 45 minutes on one topic, we'd learn more from the opportunity to press for facts, to highlight damning omissions, and really make it clear where they stood.