I'm not a fan of the ABS challenge system or any replay system in baseball. IMO, it takes away from the excitement and the momentum of the game. How many times have we seen a great play, offensively or defensively, to end an inning or to end the game, and the players can't celebrate because they have to wait for the replay call.
Also, I think the umps do a pretty good job overall. And who doesn't miss those great manager ejections after arguing with the umps?
I know the ABS challenge system is coming. I'm bracing myself...