Hiding one channel bears no implication on the visibility of any generated channels.

I think this is a good key point.

If the programmers wish to have a hidden channel, and Albert's code independently suggests an identical channel that isn't hidden (Because Albert just came up with the idea.) then it is perfectly fine to just implement the open channel and to have Albert remember that fact. The entire reason to have the hidden channel is to prevent Albert from going below a certain level of transparent communication.

If Albert voluntarily communicates more, that's great, but you would still want to leave the hidden channel in as safety code.