Bullpen right now is likely:
Closer - TBD external acquisition
Setup - Hodge, Pearson
Middle Relief - Morgan, Merryweather
Matchup Guys - Miller, Thielbar
Long Relief - One of Assad/Wicks/Poteet
Keegan Thompson and Rob Zastryzny are likely around in case someone gets hurt in ST. Or maybe with all the off days in April the team foregoes an early season long reliever and one makes the OD roster that way? Thompson is sort of in between a regular short reliever and a long guy as is
Then you have Palencia, Roberts, Little, Neely, and Hollowell as your Iowa shuttle guys
I wish I felt comfortable calling one of Thielbar/Merrweather/Morgan a setup guy from Day 1, but otherwise assuming that closer is on the way it's a pretty solid and very deep group.