I disagree with the oline assessment. Perry was fine at RT but I'm in the minority that he is a better guard prospect than tacklet prospect. Moving inside also helps Pendleton and the overall interior.
I also think Sanders will be good at LT. PFF loved Sanders (he was consistently one of our highest graded lineman if that means anything; 2nd highest for the season on the team behind Moe). His biggest issue was strength (the stinger didnt help) and you would assume he gets stronger going into next season especially since he was a true freshman this year. Losing Heard wasn't ideal but not back-breaking.
If Williams can man the RT spot, we all love Moe, and hopefully Pendleton improves, we can have a very good oline unit next year imo.