@Yes Looking at your the Sports part of your update, I got to wondering if the Miami Dolphins might have made a fourth consecutive Super Bowl appearance in 1975; and while it does look like their playoff game with Oakland was close enough that getting them to the NFC Championship Game is a cinch, it would seem (at least according to the site you linked to) that they’d likely do unfavorably against the Steelers. So much for becoming “America’s Team” then.
They'll still have to get past Joe Robbie's tight-fistedness with player contracts but they have a reasonable shot, certainly they're the established titan of the AFC at that point while the Raiders and Steelers are still trying to climb the mountain before they even get the shot to knock Miami off. On the "America's Team" note because it weaves so nicely back into the mainline political bent of the TL, Dallas taking on that monicker (even though they've just dropped a Super Bowl to Miami in the rematch of SB VI) has more to do with their cultural positioning (i.e. who it is who think the 'Boys look like "real America") than their postseason success rate.
This is a good quibble. I set up the sim on the basis of Oakland taking home-field advantage based on a much better in-season record, rather than an annual trading process. The more you know Yeah Roberto (by intangibles as much as his stats) helps boost up Pittsburgh in that chaotic NL East of '73 and, likewise, adds to complacency the season thereafter because why fix what almost worked last year? And, not to sound too much like a bad color commentator, but in '74 the Cards are hungrier.I don't want to try to pick out only one quote with the whole Sports thing, but if in 1974 the road team won every game then Oakland won the World Series. I think What If Sports uses the 1995 through 2002 model of odd vs. Even switching leagues, but from 1946 through 1993 in even-numbered years the national league was the home team.
Otherwise looks great. I can definitely see Oakland winning in 1973 Over Pittsburgh, which can win by a few games in a very weak division with Clemente still alive. Then they feel they don't have to make quite the moves they did and lose the division in 74.