I tend to think this as well. Especially with Sirles starting at LG against Iowa, I'd be interested to see how this lineup would look next year:Andrus to NU = Starting LT
LT - Peat
LG - Sirles
C - Reeves
RG - Long
RT - T. Moore
Under most circumstances, starting two Juniors, a Soph and two Freshmen would scare the crap out of me but I think that unit would have the talent to be really good and play together for a long time.
As far as how many linemen per class, if you look at five spots times two deep you absolutely need 10 that can get the job done. Even if they're all here for five years, that's for sure two per class so I would think that would be the absolute minimum. Five last year was great. I'd feel a lot better with three per class but I'd "settle" for Thurston and Peat.