You are underrating them.
They are presently 16th of 30 in SP fWAR in 2024, so they only need to replace Kikuchi to get to that level again. Gausman, Berrios, and Bassitt is not a sexy trio but they are all durable crafty veterans at this point so I could assume that they will make adjustments and be cromulent. Between Y Rod, Francis, Manoah, and Bloss any questions about depth (SP6-9) are covered.
Yes they need to add two SP, ideally a front end guy and another rotation fixture. But so many teams go into every single offseason with that same want on their list.
The bullpen is horrendous but it's a bullpen. Just go acquire 6 Brendon Littles, one of them will randomly be elite that's how it works.