Shatkins brought back one ace and pretty much stole another one off the FA pile. They made a nothing trade for what seems to be an elite set-up man. They made a nothing rule-5 claim for an above average 7th inning guy, who could even be a starter next year. They recovered from a mutually-failed trade with Washington for an RP as well as the complete collapse of one of the league's best lefties and still ended up putting together an above average pen on the fly.
It's in fact several of the pieces that AA picked up that have held this already first-place team back from being in a more decisive first place: Tulowitzki, Martin, Dickey, etc. Bautista has done pretty much nothing and Cecil has been a disaster. But Shatkins have somehow (and luckily, though AA was no stranger to luck) built a competitive ballclub despite all this.
I'm not saying AA doesn't deserve credit for building this core, nor does he deserve criticism for some of his elite assets putting out down years, but I don't agree at all that Shatkins are simply riding his coattails and waiting for their turn.