One prospect who should be untouchable: 3B Colt Keith
You could probably guess who this was when I teased it at the beginning. Keith should be a top 100 prospect when all the lists come out next year. He's legit. He can rake.
In 216 plate apperance at High-A West Michigan, Keith slashed .301/.370/.544 with nine home runs and a whopping 150 wRC+. He almost certainly would have reached Double-A by season's end, but a freak shoulder injury while sliding into second base during a game in June put a damper on those plans.
Luckily, he was able to recover in time for the Arizona Fall League, where he picked up right where he left off. He slashed .344/.463/.541 with three doubles and three home runs in 61 plate appearance during the AFL. He cemented himself as the soon-to-be Detroit Tigers' No. 1 prospect with his performance.
Keith is a special talent, and as shown the abilty to do what it takes to improve. He noticed he was a singles-hitter in 2021, so he bulked up (subscription required) from 211 lbs to 245 over the offseason in an effort to hit more more power, and it paid off in a huge way.
Keith is far and away the best hitting prospect in the Detroit Tigers' farm system. He has a short, compact swing and can hit to all fields. Plus, he plays third base, a position of long term need for the Tigers.
With all that being said, Scott Harris would be crazy to trade Colt Keith. Unless you're getting an absolute superstar like Shohei Ohtani, Bryce Harper, or Julio Rodriguez in return, Keith should be untouchable in trade talks.