Agree on Cook, and Bart could definitely play some there. It seems like there's some chance Grandal or another catcher comes back, and if the former does, people will roll their eyes, but if Skenes wants him back, then I think you kinda gotta do it.
I've stopped really having a strong reaction to the merry go round platoon almost everywhere thing, but the central problem always remains that the Pirates prefer to cut one too many corners with it.
I haven't done the deep dive that some others have been doing, but as I see it, there are four main concerns, with the first and most central one still being a major impact bat, presumably for corner OF since Horowitz very much seems like the mostly every day 1B.
Second is SS, which by default is going to IKF but that isn't exactly ideal. Third is some kind of additional SP depth, because we need to alleviate any pressure to fast track Harrington or Chandler (and I say this even granting that I'll be the first to call for Bubba on the opening day roster if he looks good in ST). Fourth is bolstering the bullpen, but that probably just takes the form of finding some more dart throws and hoping for good variance in general, which is a lot of what the BP situation seems to come down to.
All told, short of a shocking signing of Sasaki, I would see a Keller trade instead of any of these concerns being addressed as a major white flag on competing, and I really have trouble understanding why that would happen since presumably another side step or step back will cost Cherington his job. Trading Jones would fall into the same category, but at least in theory you could try and get a true impactful young position player budding star for him. I don't have exact names, but Jones does have the true right tail outcome of somebody like Strider (though I'd say I am in agreement that he doesn't likely get to that gear all the time), so moving him would have to move the needle in some major way.
Just to throw something bat shit out since I keep bringing up Sasaki anyways, trading Jones as a headliner in some kind of Tucker deal where you also get additional, controllable pieces from them would at least raise an eyebrow, even as Tucker is only a rental. But that kind of thing is probably less likely than the already impossible idea of us signing Santander or Hernandez.