For the record, I didn't say they HAD to start. I said compete to start. Wisconsin (who many say we are trying to be like) had 3 RS Freshmen on their 2 deep last year. That likely wasn't out of desperation. It was because they were ready to play.
Lately, freshmen starting for Nebraska on the OL, has been due more because of lack of depth and we needed a body.
Basically we need good OL that can actually push the players that are on the team. It doesn't need to be all 5 freshmen starting. I would just like to see 1-2 big time OL be able to come in and actually compete day 1. Even if they still redshirt in the end.