Hmmm, that's a tough one. With Knightmare, it was always a case of "so many of the little things". A question i've recently begun to ponder is, is it more enjoyable to watch a talented team intelligently and logically sweeping through the dungeon, or is it more entertaining to watch four bunglers lolloping towards a hopefully entertaining death? We all know what makes the latter; advisors hollering over each other, dungeoneers relying on advisors for answers to the simplest of questions or both advisors and dungeoneer repeatedly failing to differentiate between left and right. I think i'll go with the former, as it was much less common. One of the things that makes Series Seven stick out, is that the final two quests of the series were possibly the greatest of the whole eight series'.
A perfect episode of Knightmare would, for me, contain a useful team. Advisors would allocate their respective roles amongst themselves beforehand, and would rarely deviate from them. The dungeoneer would be sharp enough to answer some riddles, have good footwork and, most importantly, be able to "roleplay" and really be able to enter the spirit of the game. The challenges would be tough and thought-provoking, but always fair and set up to favour the talented. Oh, and the characters would come from my "Dungeon Dream Team" thread. I would have a few scenarios, such as Lord Fear bickering with Mogdred in a spyglass scene, and the dungeoneer would come up trumps in a life or death sequence with Grimaldine, who would be a neutral in every sense of the word. That's another thing I would add, clearly defined heroes and villains, and highly dangerous, yet potentially critically important, neutrals. None of this "I am sort of neutral, but I hate Lord Fear, so i'll help you anyway" nonsense.