Yandy Diaz
As evidenced by the cover photo, Yandy Diaz is someone this team is currently missing big time. It has been quite some time since Diaz last appeared in a Cleveland uniform, so this is more of a long-term than instant regret. It took a bit longer than anticipated for him to finally hit his stride and not be the hypothetical every day lineup presence many projected him as. This is in addition to the long list of injuries Diaz has dealt with since being traded after the 2018 season.
Diaz was always someone who hit the ball extremely hard and for the longest time the ball was not getting in the air enough. That has changed and Diaz is finally driving the ball consitently enough to finally land him in the "miss" category of moves by this front office. Diaz and his current 188 wRC+ to go with his .322/.425/.599 slash line would look really nice manning first base on a regular basis right about now.