Lots of talk about next year being a "transition" year for the Mets, but to me that sounds more like "We're not going to try to buy everyone this winter" than "We're going to be bad." Unless they continue moving guys out, like Alonso or whatever, they will still have the makings of a decent lineup:
C: Alvarez
1B: Alonso
2B: McNeil
SS: Lindor
3B: Baty
LF: TBD, maybe Mauricio?
CF: Nimmo
RF: Marte
If they get a bounce-back from McNeil and/or Marte, and possible progression from Alvarez and Baty (Alvarez is already really good), the lineup could still be very good. Of course, with this group, they never seem to be able to hit all at once, but the framework for a good offense is there.
In the pen they'll still have Diaz, Ottavino, Smith, and Raley, which is only half of what you need, but it's not inconceivable they can find some scrap heap guys to chip in.
The real issue will be the rotation. Senga, Quintana, and what? It's hard for me to believe they won't sign an arm. I can't see Cohen sitting still all winter.
Anyway, this of course changes if they start selling more guys. It's still hard for me to see them being a dumpster fire next year, though. To me, "transition year" seems more like they're going to try to build up internally a little this year before going all in the following year.