Adley has nothing to do with trading Basallo to upgrade the rotation, but their future plans may factor into the decision making. I'd love to have him as the backup, but do you see him as an everyday player? Then, eventually their plans for AR will have something to do with it. Even if they plug him in as the backup his bat needs to be in the lineup if he continues progressing.
I don't like idea of trading some of their higher rated prospects either, certainly not Basallo. However, unless they make some kind of move (again, not Crochet) to solidify the rotation or Povich really exceeds his projected ceiling they're gonna need help.