It is worth noting, even in a small sample size, that Machado's batting average and OBP both dropped 50 points when going to the NL....I think he ends up with the Yankees. He wants to be a Yankee, he wants to play SS, the Yankees need a SS, so I expect the Phillies to be used to get mega bucks from the Bronx.
With Harper, I see it coming down to the Cubs and Phillies.
What about trading for Arenado with an extension? He is a much better fielder at 3B than Machado and wouldn't demand he play SS when it isn't his best position. It would cost dearly. Hernandez would be a small part of the package, but Arenado manning third is my goal, even over Macahdo at SS and leaving Franco/Santana at 3B.