My top priorities are always to add an ace.
I'm not sure how realistic that is this off season. We have Price returning, hopes that Porcello can get his act together (again) and Wright as a hopeful depth piece.
This what I want:
1) A GREAT clean-up hitter (if he can play 1B- all the better)
2) A solid bench player like Nunez, since Pedey, HRam and no 4th OF'er are question marks in 2018.
I would not seek a 2/3 starter. I'd add a couple guys like Fister as depth in hopes we can find someone like the 2017 Fister.
I'd leave the pen untouched. Adding full seasons from Smith, Thornburg and Ross should enough.