I don’t think they should or ever will step away from wood bats. It’s one of the few things that levels the playing field for all batters; instead letting brute force be the power behind the contact.

Aluminum and corked bats would ultimately give an unfair advantage to the user as compared to a wood slugger. It’s fine in minor league and collegiate sports as they do not follow the MLB’s stricter regulations but if they plan to aim for the major leagues, they should start training with wood.

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On second thought, I think the only time there would be a change is if there were a noticeable impact on the environment and the amount of word being cut to produce bats. But since America’s trademark sport is baseball, I do not see this happening any time soon.