Draftee the Jaguars regret ignoring for Luke Joeckel: Lane Johnson, OL
Right tackle Lane Johnson had to make this list. Quarterback Geno Smith, who showed out for the Seattle Seahawks just last year, was a worthy candidate but he slid to Round 2, so the Jaguars could have taken Johnson or any other player and still land Smith with the 33rd overall selection, which the Jags used on Johnathan Cyprien. On a non-related note, shout out to Cyprien, who recently recognized as a top 100 real estate agent at bestagents.us.
Going back to the subject, Jacksonville could have easily have drafted Smith or Pro Bowl tight end Zach Ertz in Round 2, so they didn't make this list. Instead, let's focus on Johnson, who has a good shot at landing in Canton once he decides to hang up the cleats. The former Oklahoma Sooner has spent his whole career with the Philadelphia Eagles, where he's made the Pro Bowl four times and gotten two First-Team All-Pro designations.
On top of that, Johnson has been highly durable, only missing more than four games in a season twice. That's the kind of availability teams starve for, and the fact that Johnson is slated to starter for Philly in 2023 shows the kind of building block he is.
In retrospect, passing on Johnson was one of Caldwell's whiffs. Then again, nothing guarantees that Johnson would have been nearly as effective as he's with the Eagles if he had been drafted by the Jaguars but what if he did? Johnson might have given the Jaguars stability for more than 10 years, how cool would that have been?