Chip has made very good points. Most compelling is the simple point that a hard deck is a distraction. It's a contest scoring related distraction at a point in time and space that none of us can afford one. I know how much focus is required when approaching the class A airspace boundary. When a possible off-field landing is imminent, I don't have spare bandwidth to deal with an artificially created problem and its set of nuances.

I also strongly agree with Chip's point that human nature will allow that circling to the bottom of what is permitted must be OK for me since it would be OK for others. That factor, combined with the problem of altitude measurement uncertainty forces the hard deck to a large number that simply will not be acceptable.

I generally favor rules to encourage safety. I have long favored changing to mandatory Flarm. I see the hard deck idea, unfortunately, as not workable.