... well, we're going to find out, possibly, as soon as next year. At the GM meetings, a proposal to allow umpires to use replays was approved, but only:boundary calls -- whether potential home runs are fair or foul, whether balls go over fences or hit the tops and bounce back, and whether fans interfere with possible homers.
Now, this will be referred to Czar Bud, a more formal proposal could be drafted, and GM's will vote on it again at the winter meetings next month. And then, both the umpires and players unions will have to approve.
But in these limited circumstances, I'd think this will get the go-ahead, and I'm in favor of it.
The article also says:... to speed up games, baseball was considering limiting when a hitter could step out of the batter's box between pitches, restricting the number of times a player could visit the mound, and limiting the number of players allowed to visit the mound.
More good news. Games are getting slower, particularly postseason games. Let's get them moving faster.