Your team looks good- very well balanced. Like the others, I don't know if Salty is doing much for you. May be worth seeing who is FA and if you can add some utility by dropping him.
In my opinion, RP is one of the better positions to be having problems early on. There are always going to be closer positions that are volatile. Identify a few that you think are worth watching and keep an eye on the current closer and the next couple guys in line. I made a bunch of moves in my bullpen last year. Ultimately, a few guys that I would never have considered taking early helped take me to the championship (ex. Rex Brothers, Koji Uehara, Joaquin Benoit). Just be patient with your setup guys until then. Won't get you saves, but will help ERA, WHIP, Ks.
>>A note on this, Aroldis Chapman got a pretty gnarly injury last night. If I remember correctly, JJ Happ missed pretty significant time with a similarly unfortunate incident last year (60 day DL?). Look into JJ Hoover from Cincy, or try to keep an ear to the ground and strike quick before the guy who has Chapman poaches him (or any other volatile closer you're eyeing).