Bilyeu was the player they targeted in that draft, but don't forget that they tried to move up in the draft so he wasn't the guy they REALLY wanted. "Flexibility and defensive depth" are the only words Marsch used to describe him and honestly if those are the only traits that stood out (good traits mind you, no ill will toward the guy) it simply isn't enough in MLS these days. Not with the academies coming through.
For picks that are further down the draft I think you have to find guys that do ONE thing really well. Not a lot of things just okay. Ream is a really good passer. Lade has the heart of a lion. Muyl will run through a wall. Lewis runs FAST. I think you need to pick guys like this late in the draft and hope that they improve other aspects of their game to make some sort of contribution. Doesn't have to be a HUGE contribution, but something is better than nothing.