There would never have been a discussion of the "Curse of the Bambino" in Boston.
I thought the term was invented by Boston Globe sports writer Dan "CHB - Curly Headed Boyfriend" Shaughnessy after 1967.
Red Sox fans in general, even before 2004, had very, very little to complain about. Since 1967, the Red Sox have had an amazing number of seasons where they won more than loss. Yes, lots of Post Season disappointments (1975, 1986, etc.), but THEY MADE THE PLAYOFFS with some frequency. Were not talking totally helpless teams, like the Pirates or Royals of the last 20 years.
It could be supposed that winning in 1967 could teach the players to be "winners", but between 1967 and 1975, all winning seasons, there was only one season where they were actually close to winning their Division and making the playoffs.
In 1972 they finished one game behind the Detroit Tigers. (Though they won more games than their runs scored vs runs given up ratio would suggest.) Even if they win, odds are in favor of the superior Oakland A's team beating them for the AL Pennant.
Would the team have changed much between 67 and 68 with a World Series Title?
IOTL in the off season they traded starting catcher Ryan to the Phillies(?) for pitcher Dick Ellsworth who pitched very well for them in 68 (positive move)
IOTL in the off season they traded minor leaguer Bill Schlesinger to the Cubs(?) for Ray Culp, who was probably their best starter in 68 (another positive move).
IOTL a couple weeks into the season they bought pitcher Juan Pizarro from the Pirates(?) and he threw 100 innings of slightly below average ball, which aint a bad replacement when your ace Jim Lonborg misses half the season with injuries.
Wyatt and Brandon who each pitched over 100 innings in 67 (Wyatt very well, Brandon very poorly), hardly pitched at all in 68.
So the pitching staff was quite fluid between seasons.
The Position Players?
Mike Ryan was replaced at catcher by Russ Gibson. Bad offense by Bad offense.
Ken "Hawk" Harrellson became the everyday rightfielder instead of Tony Conigliaro, who got horribly, horribly hit in the face (ruining his career) in August of 1967.
Other than that, pretty much the same team on offense and defense.
The obvious, obvious POD for having the team win the 1967 season and to also have a continuing effect on the Red Sox into the 70's is to butterfly away the Conigliaro beaning and have him a healthy Red Sock for life.