OMG, you make that trade in a NY minute GM. Look, DeLos Santos is an interesting prospect sure, but if there is one thing the Phils have in spades its young pitching prospects and you don't let maybe your 4-5th best long term pitching prospect [Sanchez, Medina, Irvin, Eflin, Kilome to name a few] get in the way of a generational player.
As for Gamboa, solid young infield prospect in an organization that has several. Taveras? I bet his best friends don't know he is pitching in professional baseball.
IMHO, there is NO way these three guys bring you Machado but if they do, you make this deal. One of the aspects of this season that has not been discussed [and I acknowledge that perhaps its just me] is how utterly boring this club has become. I freely admit I have never been a fan of the strikeout offensively despite all the people over the years showing numbers that say they don't matter overall.
I believe they do and baseball in general, and the Phillies in particular, have been quite boring because of it. Let's put it this way...I LOVE BASEBALL but don't don't like it very much right now, way too much dead time with strikeouts. Machado would add some excitement to what otherwise might become a fairly dull summer as this team slowly sinks from wild card competition.
If DeLosSantos, Gamboa and Taveras truly can get you Machado I believe you have to do it.