ATG III league with each team based on a single franchise. I'd suggest a 100,000,000 salary cap, DH, and use a stadium from your franchise but I'm open to suggestions.
The franchises that would work are the Yankees, Red Sox, Cubs, Cardinals, Giants, Dodgers, Indians, A's, Tigers, Pirates, Phillies, and Reds. The Senators, Orioles and Mets (with Carter and McReynolds added from the Expos and Padres) might work. Most of these teams have four years represented. The Yankees have 6 and the Red Sox and Cubs have 5. If people think that's an unfair advantage, we could have those teams use only four years.
I'll start a sign up list. Include the franchise you want. If more than one person wants the same franchise, we can figure out a way to draft a franchise.