This subject has a lot to do with values. Britt was the worst pass blocking RT in the NFL, but one of the best run blockers. I agree that Britt should move to guard, but the idea of having an elite run blocking RT is very important to our style of offense. That's why guys like Bailey and Gilliam have been used at RT only as a last resort even though they are good pass blockers.
The key for Gilliam is how he develops in the run game. If he's all pass pro and no run blocking, he'll be a bandaid at the position for one season and that's it.
I do think he has the potential to be a complete tackle, and maybe even an elite one. But so far we've only seen the pass pro aspect show up, and it's still a very small sample size on top of that. Remember how geeked we were over Bailey and Bowie in the preseason two years ago? Hype can be an unfair thing sometimes, and I don't want to be unfair to Gilliam. I do understand the excitement, Gilliam's physical potential is awesome.