We get back LG Daniels (10 starts, 644 snaps); RG Ford (10 starts, 603 snaps); RT Moala (8 starts, 553 snaps); and C Umana (8 starts, 474 snaps).
Yes, we lose the top backup C/G Toala (2 starts against NIU and ID ST, 215 snaps), but only 1 starter. The OL should be very good next year.
It's the defense that's the bigger worry (3 DL, 1 LB, 3 CB, 2 S)