I think that a lot of this is needless worry. They are trying several different AAAA arms and surely one will pan out to some degree. If not, the Strider piggy back idea should work fine.
This assumes that Anderson can remain in a top form, and that Charlie continues to get back to very above average. That formula gives you a good enough rotation to win this division.
And hopefully Ynoa or Schu. Become studly.
All that typed, if they need a SP by the deadline, there will be plenty of salary dumps available - and hopefully we could grab one earlier so we don’t get into any kind of serious prospect bidding war - meaning a team wanting to dump may be willing to dump early - get that money off the books as soon as possible..