Of course I'm lovin' ASB for the sake of Aaron Judge alone--Yankee fans have long been anticipating its implementation, given his usually MLB-leading status for most balls-called-strikes pretty much since his full-time debut in 2017. Crazy that that first challenge of his was only 1/10 of an inch below the zone, but it changed the nature of the at-bat to his advantage, and he went on to homer in a 3-2 count.
But I'm also enjoying checking out the clips of ASB in action around all of MLB, and it seems the fans at the games are generally enthusiastic about it? It does add a few more moments of replay drama and uncertainty to the game, and it's much quicker than a play challenge. And I'm not going to miss Aaron Boone and other managers screaming as much at the umps over blown calls or multiple blown calls, though it's pretty hilarious that we've already had a manager thrown out over an ASB challenge... but he was objecting on the grounds that the batter had not tapped his helmet quickly enough. *There* lay the potential for future manager/umpire dust-ups over ball-and-strike calls, if that is one's thing.
I'll also be interested to see, as the season develops, whether the outcomes of ASB challenges end up statistically favoring pitchers or hitters, or if the outcomes are roughly equal.