I like expanded playoffs and I would be fine with either the current count or one additional team per league getting in. It's clearly very good for baseball to see these sold out playoff crowds in small markets like Milwaukee, Cleveland, Detroit, and KC. Teams like Detroit and KC are clearly going to see large increases in attendance in 2025 because of the hype generated from making it to the division series.
I don't think there is much wrong with the current format. For one thing, it hasn't been around long enough for teams to fully adapt to it and come up with a winning strategy. It already looks like the teams with byes have now adapted to having a few days off -- all four of the higher seeds won game 1 of the division series this year. There's a decent chance of the dreaded Yankees-Dodgers World Series that would draw the highest TV ratings in decades. So I would default to letting the current format ride for a few more years with only minor tweaks.
The third-seeded division winner is the main loser in the current format, so if I was going to make reforms that's where I would make them. I also think if they want to do gimmicky stuff they should go crazy with the 4-5-6 (and maybe +7-8) seeds). Make it fun for the fans of wild card teams.
Also, please, please, please drop an off day or two and make the division series best-of-7.