Colorado Rockies: What relegation could look like in MLB

How would MLB scheduling work?
It would be fun to work out some form of inter-level play as it would be to the boon of the lower-level clubs. Packed stadiums would come to see the New York Yankees play the Omaha Storm Chasers, but for now, we are just going to focus on keeping the schedules within each class.
For Class A, a simple revision of the current MLB layouts can be done with 76 division games, 33 games against the other division in your league, and 53 interleague games.
Class B and C will follow a similar structure, except adjusted to allow for the pod format.
Each team will play 70 games against teams in its own pod, 60 games against the other pod in its league, and 32 games of interleague play. This format helps limit travel and hopefully keep costs down while maximizing profit.
Now that we have the foundations of the new MLB, we can finally get into what I am sure you all have been waiting for: the actual regulation procedure.
Ok, so obviously playoffs are going to have to work differently in a three-league world and with the increase of “MLB” teams from 30 teams to 66. So how would the MLB playoffs look?