Gibson to Miller is a decent comp, but there are a couple of things in Miller's favor--he's 3 years younger, has better velocity, and his k-rate is 1.5/9 better than Gibson's (even if you assume Gibson matches last year's k-rate, Miller is still more than 1/9 better). It's close, but a Gibson package should not be equal to a Miller package. That being said, I would 100% trade Gibson and Nolasco to the Brewers for Will Smith, Corey Knebel, and someone from their minor league system (top 15). Cover part of Nolasco's salary if need be, and your rotation can be Hughes, Santana, Duffey, Milone, and Berrios, with a bullpen of Perkins, Jepsen, May, Smith, Knebel, and whoever else wins a spot out of ST. That's a solid if unspectacular rotation, and a bullpen with 3 guys who profile as 7-9 guys.