Adding one quality and dependable pitcher would help. Burnes or Scott are the two top prizes, but Flaherty or Hoffman would be nice. I'm not sure Manaea, Pivetta, Buehler or Esteves does it for me.
Add a SP'er and Crawford gives the pen a big boost as an innings eater.
Add a solid RP'er and it pushes the rest of the pen down a notch on the high leverage v medium to low leverage scale of useage.
One pitcher would make our depth look nicer: two would make it very nice. Look here:
SP: Burnes, Crochet, Houck, Bello, Gio
RP: Hoffman, Chapman, Hendriks, Slaten, Whitlock, Crawford, Winckowski, Wilson
(No clear weak link)
This would be our AAA/AAAA depth:
SP: Criswell, Priester, Fitts, Dobbins (non 40: Fulmer, Gambrell, Drohan, Early, I Coffey)
RP: Guerrero, Penrod, Bernardino, Shugart, Kelly, Booser, Weissert (non 40: I Campball, Mata, Mills, Sandlin, Hoppe, Troye)
We just need the will to get it done.