Looking at the state of the rotation and the milestones ahead for this offseason, if there's an MLB rule 5 draft this offseason, I don't think they can afford to stash anyone on the 26 man. Whoever they pick would have to contribute meaningfully.
There was an article on TD that gleaned a nugget from Falvine on the potential for a non-traditional pitching staff in 2022. That seems more likely now than it did in August. If the lockout lasts until February there won't be much time to negotiate trades. There's no good, realistic, free agents left to sign (maybe iglesias or Pineda, but really... meh).
If we were to look at the roster construction through that lens, there may not be much salary added yet. They could come in with an 85-90M payroll in 2022 just for lack of options. They'd need almost every pitcher to regularly pitch multiple innings, but only a couple can pitch twice through the lineup regularly and none of them can get you into the third time through the lineup. No Looguy, no DH - 14 pitchers, 12 hitters and every pitcher but your closer and fireman pitches 2+ innings... they could be cobble it together and be competitive if the exposure limitations of the pitchers improves their outcomes.