I used a version of this room as my submission for the one room dungeon 2. Diarmuid also mentioned it was easy to lose track of which dragon was selected and suggested I slightly illuminate the selected dragon to make it easier. I went through and did it for the group dungeon and it looks pretty neat and wasn't as hard to do as I thought it might be. I may go through and do it to this version also.
As for controls the lever would represent binary numbers 0 -3. The number then represents the same as the facing direction numbers in the editor so,
both up == binary 0 == north facing dragon
left up right down == binary 1 = east facing dragon
left down right up == binary 2 == south facing dragon
both down == binary 3 == west facing dragon
(note: normally on a binary switch up would be 1 and down 0, but since in game its up = deactivated I used up as 0 and down 1. Irrelevant to the conversation I know)
As for the dragons being out of sight and requiring a lot of running back and forth, that is on purpose. I wanted the whole puzzle to take place in the cage. View it as good mental exercise to see how many moves you can hold in your head at once.
