I don't really know how much I can add to this, but today Dave Cameron of Fangraphs released his "Best Transactions of the Offseason" article. While I don't always agree with the lists, I think #1 is about as unanimous in the baseball world as you'll find. Those crazy Diamondbacks don't seem to value prospects the same as the other 29 teams.
The only one I would have had higher would be the Heyward signing. I understand the value is limited because of the opt outs, but that deal also hurt the Cardinals in the short term. The Cubs are a legitimate World Series threat so the short term benefit is much higher for the Cubs than most teams.
My Buccos rarely make these kind of lists. I looked back at all the lists since 2012 and they failed to make any of them. Generally speaking they are given credit for finding value where others don't see it, but these deals are almost always looked upon favorably after the fact. Last year the signings of Jung Ho Kang and trade for Francisco Cervelli proved to be arguably two of the best deals in all of baseball when you weigh the financial commitment to each player was minimal. Hopefully Jon Niese and John Jaso can be those dark horse guys this year.
Are you happy with your teams offseason?