This arguement is stupid. If you line up in Banff with the intent to push yourself the whole way to Antelope Wells then you deserve credit for the finish. Shit happens. The glory in this race is to finish and as a rookie you don't know if 25 days is possible. If you finish, whatever your time, you're a badass in my mind.
Cut-off, soft cut-off, different GD times/days, doesn't matter, not good ideas. The fact this event/experience is by its very nature defying ideas & attempts to regulation prompted by increased numbers, etc, shows how "large" and incredibly unique the TD is. The competition comes from so many angles and forms, even stages and levels, that to apply anymore common race organization just results in boiling down to definitions an event which begs NOT to be included.
It's the nature of the Tour Divide.