For sure you want another starter. Nolin or Hendriks or both most likely.
For sure a good defensive MIF, any 1-2 of Goins/Diaz/Kawasaki
Another BP arm or two, anyone who's healthy
And you'll have both Pillar and Gose (which we won't in July and August, barring injuries)
Those players might see some action. All the rest added to the expanded 40 man roster won't if we're in a playoff race.