I think they hit the nail on the head with the Kneeland pick. The Cowboys run stopping issues are as much about the DEs as they are about the DTs and LBs. The Cardinals game for example where the Cards ran for 222 yards, almost all over it was outside the tackles, most around the Cardinals left side. The problems was no containment outside. Watching Armstrong and Fowler get shoved around be TEs was tough on the eyes. Kneeland is a guy that I think will not get pushed around by TEs. He will give the pursuit a chance to catch up on the outside runs.
As for the Guyton pick, I differ with the Cowboys on the value of OT vs C. Yes, I think it is harder to find OTs because of the size, speed, athleticism required, but OCs need to be quick and smart too. It is a critically important position. The C anchors the entire line. Part of the rushing problems the Cowboys offense had is Biadasz is not a bulldozer. HE was solid, but they need someone stronger at C in the NFC East where we see some of the best DT combinations in the NFL. In any case, the Cowboys have been lucky with finding OTs. Maybe that luck continues with Guyton.
I liked Barton a lot. But Beebe might turn out to be just as good.
The real issues for me with this draft is the Liufau pick. I would have taken a RB but based purely on need and not best player. But failing to get a RB was not the only problem. They did not get a DT until the 7th round and that could wind up being a problem this year too.