I think that the campaigns ought to be able to select moderators.
Instead of mainstream media members who are known to have a liberal bias, imagine if each campaign could pick two moderators so that we had a panel of four asking questions at debates. Imagine if we had people such as Mark Levin and Rush Limbaugh on our side asking incisive questions of the lakes of Joe Biden and Kamala Harris.
Three debates. Each campaign picks one, then the two moderators agree on the third. No agreement, no third debate.