Unfortunately as we saw during the offseason, corner OF and 1B just aren't that valuable on the trade market right now. Braun as you said is pretty much untradeable, and I just don't see teams giving us back the value that we get from Aguilar and Thames. Santana seems like the most viable trade candidate to me, but it's a catch-22. If he gets hot and pushed his OPS up to around .800, you're probably going to want him in RF daily and be hurting yourself by trading him. If not, his value will continue to drop as teams had concerns about him in the offseason which will look more and more justified. You still might be able to get someone like Dozier for him either way, but I'd feel like we were selling really low on Santana to trade him for any rental not named Manny Machado. If you really want to get value from a position of depth, you could probably get it from bullpen arms. They're in high demand at the deadline, and guys like Albers or Jennings at their current numbers could probably fetch more than you'd think at the deadline, especially considering both are controlled beyond this year. But bullpen depth isn't like 1B/OF depth, can never really have too much pen depth and most likely you'd be dealing with other contenders who want to give up prospects anyway. So to answer the original question I'd say stand pat with the 1B/OF depth, with the exception of Santana being a major piece used to acquire Machado.