Sale having to pitch in game 2 really does nothing for us because we can no longer face the Braves.
The optimal scenario is a close Braves win in Game 1, where the Mets have to burn through one of Severino/Megill and some of their A relievers, followed by a non-blow out game 2 in which they burn more A relievers and whoever of Severino/Megill doesn't pitch Game 2. They would then be left with none of Severino, Megill, Manaea, and Quintana to pitch Game 1, unless they decide to go with Manaea on three days rest. And Severino and Megill would be taken out of the WC round entirely.
An extra inning game in Game 1 would be icing on top of the cake.