I suspect that Trump will largely ignore the moderators and turn questions to fruitful topics and directly challenge Hillary. He has persuaded people that the media is heavily biased. He can now use the debates as he sees fit to skewer Hillary, and if the moderators protest — well, they’re just being biased again, right??
From all his years doing the Apprentice and all the numerous rallies over and over again plus all those GOP debates Trump is honed and has stage presence command. He won’t be boxed into a corner by the Mods.