I've seen this a lot, but I'm not so sure about there being more of a need on the O-line vs the D-line. I realize we didn't take any O-linemen in this class, but we had three that redshirted. I think Dallas Thomas is the only one we're losing this year. So, 2013 should not be a problem. In 2014, Tiny and Marcus Jackson will be Seniors...maybe one more guy, not sure. The three that are RS Freshman this year will be RS Juniors. I think the class of '13 will have 4-5 O-linemen in it. So, in '14, they will be Sophomores/RS Freshmen.
Comparatively, our D-Linemen are scattered about as well with several in their last year or two. The difference being, you usually want a lot more D-Linemen because you rotate them out. O-Linemen, barring injury, often start and play every play of the game that the offense is on the field.
Also have to wait and see what happens in the 2013 and 2014 recruiting classes of course. Never know when you're gonna pick up the next Tiny or the next JUCO D-Lineman.