I don't think we'll ever see Koda Glover pitch for the Nats again. For a young guy, he has a lot of old guy injuries. Hip, shoulder, all the rest - each one is a bad injury for a pitcher. Add it all up, I doubt if we'll see him again. At this point, I think Aaron Barrett is closer to coming back than Glover.
Suero has talent and I think he'll continue to improve. Torres is a warm body and will be gone as soon as either Grace comes back or they decide to go back to a 5-man bench. Gott is a spaz with a very complicated delivery. He has good raw stuff, but like Adams now and H-Rod and Romero in past seasons, high heat and lots of movement is a waste if there's no control.
The Nats are really thin on relievers throughout the system. They'll certainly trade for someone later in the season, but for now, I would increase Suarez's workload, ride Kelley like a cheap whore and kick him to curb when his arm goes out again, wait for Grace who is somewhat dependable and see if someone rises to the top from the minors.
One other thing I would do is bring Ross back in the bullpen when he finishes rehab. I don't really see him as a starter, and the way the rotation is at the moment, there's no room for another starter barring injury to someone.