Get a #2 SP, trade Duran, and for the love of god, ADD A BIG BAT IN THE MIDDLE.
And if the solution is "Casas is coming back", F that. Don't just rely solely on that. The lineup has a lot of potential still with Roman, Mayer and Campbell (LF) added. Still need an Alonso or Schwarber type big bat. The Sogard/Eaton/Romy/Hamilton types need to solely be depth and for pinch-running/defense, that's it. Not regular guys like they became for large stretches.
I like an OF group of Campbell/Rafaela/Abreu.
Bello had a good year, but to me he's probably best as a #3. The 4th and 5th spots can be filled with our depth and prospects (Early, Harrison, Kutter, Tolle, Dobbins, etc.) but add another horse behind Crochet and in front of Bello.