Here's why I think it's buyer beware with JT:
RC+ from 25-29: 111, 107, 126, 108, 125, but he was declining this season after a hot start, doubt he'd finish that well. So 30-34? Probably in the 100-110 range. Outstanding defense is the key to his value, but how long can he maintain that high of a level of performance. Which raises the other question, how many games can he catch per year? At DH or 1B, 110 RC+ ain't worth that much.
Rest of the lineup:
Didi had a nice bounceback, I'd be happy to pay him his QO, but I don't think he's going to be an average fielding SS in 2-3 years, and as his fielding declines, he'll probably be a 1-2 WAR player.
Segura is interesting, his BB rate went way up, fluke or coaching? So did his Ks and ISO, almost like he was being taught to look for his pitch and drive it instead of swinging early. Not sure he's a SS anymore, but he can be a plus 2B and 3B defensively where the loss of a little quickness is less of an issue.
Hoskins is a tough decision in terms of contract, is the DH permanent in the NL? Because he hasn't improved defensively, and it's hard to pay big money to a 28 year old hitter who seems to have peaked offensively but is a liability defensively even at 1B.
Knapp is another tough one, really improved offensively but a short sample, average defensively, at 29 still has three controllable seasons, could just lock him up with an relatively low cost deal to back up JT if resigned or Marchan in two years.
Quinn - he'll be 27, regressed as a hitter, SSS both years but hard to see him as a starter.
Haseley - same basic offense as last year in much smaller sample, defense was down, will be 25.
Kingery - I'd write this year off due to COVID, never really was 100% until the end when his swing got quicker.