The best trades are the ones that benefit both teams and are not subjected to who won or lost in the transaction. What has changed over a year? A year ago I looked at the trade for Craig Kimbrel and the high price in prospects the Boston Red Sox had to send west to the San Diego Padres.
The Red Sox prime centerpiece was Manuel Margot, whose chances for breaking into the Boston outfield were minimal. Dealing prospects is always a risk, but when they are potentially expendable you simply do it.