Does Micah save this draft class?
I'd say your eye test is off. If you look at the players, where they were drafted and what they did in that time frame, this wasn't some disastrous draft class at all. Most draft classes, when looked at a few years later, are basically trash with the exception of a player or two (if your lucky).
IMHO, hindsight grades for this class are not bad at all:
1 Micah is a stud
A+++
2 Joseph was a reach, Dallas needed a CB and everyone knew it.
D-
3 Odiggy is a very good DT
B+
3 Golston is a solid back up DT/DE with position flex
C+
3 Wright is a solid back up DB with position flex, he's still on the team
C+
4 Cox is a big disappointment
F
4 Ball has become a solid OG/OT back up, he's on the 53 if not injured
C+
5 Fehoko showed a little, but never progressed
C-
6 Bohanna never did either
C-
6 Muk is a solid back up S/DB, for where he was taken that's a
B-
7 Farniok was a 7th rd flyer on a fairly deep unit, who made the team for a couple years
C