Some very good points there, Brett. Looking back on episodes of Knightmare nowadays, how I could relate to your assignment of team members' roles: The Warrior - essentially the dungeoneer who goes into Knightmare to redeem/rescue the quest object. (Also worth pointing out that in Knightmare Live, whenever the dungeoneer is asked to give their name the actor questioning them would then follow it up with "A Warrior's Name!") The Decider - could be the vital component to the advisor designated as team captain. If their dungeoneer is in peril (i.e surrounded by an army of goblins) it would be down to them to make the all important decision in time to ensure that the dungeoneer escapes from the dungeoneer safely. The Navigator - advisor who gives the directions to the dungeoneer, wary of any forthcoming pitfalls. It would be their task to give commands such as "walk forward" or "sidestep". The Sage - lastly, the other advisor who has swotted up on any potential riddles and could also be the one who is assigned to cast any spells given to the team during their quest.

I'm sure that it would have been the guilotine room and the place of magic as well.  I remember during Martin's quest where Merlin appears in level 3 and tells the team that they only have 'a short way to go'. This is one piece of evidence making it unlikely for there to be any other rooms between that and the guilotine room.

I would be honoured to put my ideas to Tim Child to help bring Knightmare back. I don't know about Tim, but this forum's Knightmare à la Maison section is a great place to share ideas for any future series.