Well, the NL and one of the NPB leagues are the last of the non-DH leagues in the world. If you want to get to uniformity, then you have a lot more leagues to turn around if you go back to pre-DH rules.
I think that the other leagues would switch back to "real" baseball if the AL did. MLB is the "king of baseball" world-wide...why else do we call it a "world series"? Others should get rid of aluminum and graphite and composite bats, as well.
The best youth ballplayers usually become pitchers. Some move on to field positions, but most NLB pitchers were good players until someone said: "You pitch and do nothing else".
Single best baseball player I grew up with was a pitcher who also played 3B in American Legion ball. He made our starting basketball team as a 7th grader, and the starting team at Northwestern HS as a 10th grader. All-around athlete. He also was Washington Post All-Met QB as an 11th grader, and probably as a 12th grader also. Hardest throwing kid in PG County when we were 12; had also mastered a hard curve and a slow curve.
Let these guys be athletes. In the olden dayes, Camilo Pascual hit over .300 in 1958; Walter Johnson hit .400 in 1925. Judging from the stats, they must have used Johnson as a pinch-hitter once in a while. The young pitcher who was expected to be "the next Walter Johnson", a pitcher who held the World Series record for consecutive scoreless innings for more than 40 years, was Babe Ruth. Let them hit and field and run the bases...Max Scherzer showed it can be done.