This article from Dan Szymborski (ZiPS creator) a few days ago has before/after projections for KB, Rizzo, and Baez (unfortunately no Schwarber)
tl;dr is this year has been enough for the projection system to drop them each from very good to above average, not bury them completely. I'd imagine for Schwarber, who was merely above average before, he projects around average at this point. With each guy being on the eve of FA, and given the payroll cutbacks we're going to see around the league this offseason, I think they're all movable. KB and Javy probably have a bit of value, with Rizzo and Schwarber being breakeven-ish. I'd ammend my plan from a month ago slightly, given that I'm starting to think Hottovy is a miracle worker and it doesn't take as many resources as I thought to keep the pitching staff afloat. There were some rumblings that Happ is down for an extension. So I throw some money his way, trade Contreras for a pretty good haul, and I trade KB for whatever pitching I can get. I'd imagine he's worth something like another team's Alzolay at this point. Payroll at this point is somewhere in the $150Ms. I don't know what PTR is going to find in the couch cushions, but I'd think that leaves at least $40M to spend, probably closer to $60M. You need 2 starters and 2-3 bats, but for the bats you can be pretty position agnostic since Bote, Vic, and Nico mean every position is at least nominally filled. I'd do something like Jon Gray and Mike Minor on the pitching side, paired with Brantley, Semien, and Kiké Hernandez on the hitting end, but there's a million reasonable combinations.