The most pressing issues to address in the new collective bargaining agreement deal with baseball's financial structures, such as free agency, minimum salaries and revenue sharing. But MLB and the players' union can also alter how the game is played.
It's almost certain that there will be a designated hitter in both leagues next season, which hopefully will begin on time, and some form of expanded playoffs. Beyond that, though, MLB and the players' union also could decide to revise the rules for replay review, institute a pitch clock and curb the number of pitchers allowed on rosters, among plenty of other possible changes.