Bobby Witt Jr. swung his big fat cock around in the 2nd half. 138 wRC+ on his way to a 30 hr, 49 sb, 5.7 WAR season. I think he's right up there with Carroll, Acuna, Julio and Adley as the new young superstars of baseball.
Betts, Freeman and Olson were some old vets who had big seasons.
That said - the big thing this year was undoubtedly the rule changes. MLB hit a home run with them. The return of SB's to baseball was amazing, as was the pitch clock. Just like the takeout slide, those were against the new rules seemingly disappeared and were never heard of again after the first month. Was there even a violation in the playoffs? I don't think so and I don't recall one single moment where the 15 or 20 second clock stole the moment away from fans (or any of that s*** people thought would happen).