I'm sure there will be whining, but my comeback is that if the Braves couldn't even get their series to a 5th game, Best of 7 seem unlikely to have made a difference. Their fellow 100 game winners were swept, so again rather improbably to have made a difference.
I agree with Manfred, essentially too small of a sample size to change course as of yet.
While some are calling for a change to baseball's postseason, which has seen some of the league's best teams in the regular season fade out quickly in October, commissioner Rob Manfred said he prefers to be patient. "It's only Year 2," he said.
www.espn.com
The 3 teams to win 100 (LAD, Atl & Bal) combined with 99er (TB) went a combined 1-11. The Braves were rather fortunate to get the 1 victory or it would have been a skunk.
The lesson learned...don't win too much in the regular season.