I personally think 162 games is too long for a season to introduce the randomness of a short series playoff. I also think the season is too long (as a Mets fan it would be generally most beneficial if it ends at the All Star break). But I would think fans fall into one of these camps:
1) It takes 162 games to normalize for the variables in baseball and come out with the best teams
-If you believe this then what you really want is like a 6 team playoff MAX from the division winners only, if not just the top 4 teams, or LESS, plus long playoff series (7 games?)
2) 162 game seasons are too long because there are trades, injuries, changes, streaks
-If you believe this then you want a shortened season with some restrictions and expanded playoffs