There are discussions on here that Beane is a terrible drafter, can't judge talent, etc. I am not really inclined to believe this. I think he's a great GM and am happy to have him.
That said, I was thinking about what players are truly busts under his tenure. I think they are:
Cody Ford: though he had a better day yesterday, a high second round pick needs to be a starter every week, not objectively the worst lineman on the team at times.
Harrison Phillips: I'm not sure how much that ACL tear did, but he's been awful. There are multiple videos of him being tossed like a ragdoll yesterday by the Colts' offensive line.
Zack Moss: it's time to write Moss off. He might be a decent goal line back, but he's way too slow to do anything else. He's the running back version of Reggie Ragland.
I don't want to include Epenesa or Oliver here because they HAVE contributed plenty already. Oliver in particular has come on this season; he's had about five sacks called back due to a penalty. My eye is on them, however.
I don't include picks made after round 4 since those are often crapshoots. He's gotten good value in guys like Taron Johnson and Tyler Bass, though.