For 2025 using baseball reference, the WAR for these players:
Lindor 5.8
Nimmo 2.9
McNeil 2.0
Alonso 3.4
1 WAR is roughly valued at $8MM, yr. Nimmo, Alonso, and McNeil basically performed to expected value. Lindor at $341MM over ten years is outperforming his contract value. If the Mets considered trading Lindor, 29 teams would line up to try to get him. All four of them are worth what they were paid. It’s not great that all are over 30 - but Nimmo and McNeil have small enough contracts it’ll be hard for those to be any significant issue for the team. Lindor is unlikely to play at a 4.2 WAR through 2041 - but that’s also not likely to be a problem next year.
They’ve got a couple young players who should start playing more as well. Assuming he doesn’t have any injuries, I’ll predict Baty has a better than 5.0 bWAR next year. He’s always had elite bat speed, he figured out MLB pitching the second half this year - he is primed for a breakout season. Baty is the only guy who has made it to the Mets and struggled that surprised me. Vientos wasn’t that highly regarded, so 2024 is looking like a bit of a fluke…he was fools gold. Alvarez hasn’t performed but also keeps getting injured. I don’t think the young Mets hitters struggle any more than young players on other teams - the issue is a lack of depth so the Mets end up counting on young guys too much.
The issue which predated Sterns is the Mets farm system still hasn’t recovered from the Wilpon era. The result is that - while they don’t have any contracts that are clearly albatross’s - they don’t have any great deals either. Everyone is being paid close to their performance level. That’s not a way to win, you need some guys outplaying their salary. (Some of the current weaknesses in the farm system do fall on Sterns - this was where he excelled in Milwaukee. We haven’t seen it yet - it’s possible the actual keys to success are working for the Brewers still).
The short term path forward is fix the starting pitching. Longer term they need to keep restocking the farm system - the hauls from the trades in 2023 helped, but there’s still a long way to go. Alonso is likely to decline rapidly - he shouldn’t get more than 3yrs, and no more than around $25MM/yr. I’d be fine with Mets signing him for 3 yrs, $75MM - any more than that he’s gotta walk. That’s still an overpay - but for some reason many Mets fans are really attached to Pete so that justifies what will likely be a slight overpay (especially the 3rd year).
I’m baffled by the inability of Mets fans to embrace Soto and Lindor - those two are by a wide margin the best players on the team. It feels like a Mets thing where fans get too attached to home grown players like Alonso, and never embrace free agents like Soto or Lindor. Without those two guys, it’s very likely this team would have been fighting the Nats to not finish last in the NL East.