3. He's trimmed most of the fat off the roster
This is probably the most impactful thing he's done when it comes to the big league roster. Most of the guys on the roster last year were fringe big leaguers, or even guys that should be in the minors. Think of someone like Victor Reyes or Harold Castro.
Harris got rid of a lot of those guys last year. The bottom of the roster, while still not great, looks a lot better than it did this time last year.
Guys like Zack Short, Zach McKinstry, Andy Ibanez, Nick Maton, Tyler Nevin, etc. — they're not good, but most of these guys probably won't be back in 2024. Most of the reason why the Tigers are better than last season is because the bottom of the roster is better that last year.
There aren't as many replacement level players. There's a lot of 1-2 WAR guys, but not as many 0-1 WAR guys. That's progress.
There's still more progress to make. We need to start seeing more players that are capable of 2-WAR, 3-WAR, or even 4-WAR seasons, but we're getting there.
The big league roster is better than it was a year ago, but there's still a ways to go. This is a huge offseason for Scott Harris. The Tigers have an opportunity to make some noise in the AL Central next year. They need to add some pieces this winter.