Going back to this, I would be totally in for a NHL > AHL > ECHL relegation format that would never actually happen but would be totally rad nonetheless. But also that would mean seeing NHL games in arenas that have no business hosting professional sporting events.
EDIT: And more obviously it would not work because of the affiliate system. You would literally have to create a new lower tiered league with the arenas and facilities to host NHL games which would be too expensive to work. It's a pipe dream which requires North America to invest and be crazy about hockey as the UK is with football.