Oh, what should have been: at this point, the Atlanta Braves should be working the final weekend before breaking everything down to head... er, West... to begin the regular season in Arizona.
They would have done so with an already-expanded roster: 26 players instead of the 25 that we've been used to over the past few decades of play.
Come September, though, there was going to be another rule change: the traditional September call-ups could not encompass the entire 40-man roster. It would be a maximum of 28 players at a time instead.
The rationale: much better competitive balance and 'fairness' between teams as some clubs have better minor league depth, others chose to use fewer bodies, etc.