No. We'll see how it goes here, but I don't particularly like the idea in a dynasty league. Someone could very easily screw up a team for years to come then bail. I mean, it could happen with a poster too, just probably less chance.
Are you merging the final playoff matchup for the championship? I think that should take it to the 25th.
It's not ideal, but if we can find someone in the next day or two then can take over. If you have someone in the middle of the season, it would disadvantage teams that face them later in the year (unless you want to set the lineups yourself for the missing team)
Just do what we did in the BBDL and freeze the one team. With 19 weeks anyway (I'm assuming you set it up that way), no one is at an overall advantage. It is preferable if you pair up a terrible team with that one in the last week though. Maybe you could face them?
Might as well put it here. I ran across these today in an auction lot I bought. They're not worth much, but I thought they were pretty cool. They are sealed at least.