Right now, the starting rotation has the exact same amount of sure things going into next year as it did last winter: Bello and #5 man Nick Pivetta.
Now think about the entire season, and who -- if any other guy -- would be the closest to a fulltimer? Yes, that would be... Cutter Crawford: best WHIP among starters, more Ks than Bello, and tied with Pivetta for best starter ERA.
Sign one reliable starter, trade for a young one with potential, and somehow find a respectable righty power bat to protect Devers.
Raffy's season, with rankings among AL third basemen: 1st in HR, RBI, Slugging, OPS; 3rd in H, R, 2B, BA; 4th in OBP, tied 4th BB, 5th in Ks... Those stats seem to justify top salary among position players on the team -- either that or fans lack perspective with the realities of current batting struggles throughout the big leagues.