I think it's great news that there will only be one night of debate. It'll be even better when the field gets down to 5-6 candidates that actually have a (somewhat) realistic chance of winning the nomination.
It's damn near impossible to have a quality debate on substantive issues when there's ten people sharing a stage. What I'm looking forward to is seeing how Biden will handle himself when he's forced to spend more time debating Warren, Sanders, and Harris head on.
Biden can play defense and wait out the clock when there's 9 other people on the stage trying desperately to get their 15 seconds of fame, but he's eventually going to have to take the left flank of the party head on and be able to withstand their attacks if he's going to stand any chance against Donald.
For now, I'm leaning towards supporting Biden in the primary because I think he's our best bet to win in Michigan, Wisconsin, and Pennsylvania. Honestly, we should just have a primary in those three states because they are the only ones that matter in 2020.