Well, it all depends on how that market shakes out. Could be higher than we think. Jake Long is coming off an injury, but when healthy is an Elite LT. Also, we get too hung up on the total salary and the per year average, which is almost meaningless. It's all about signing bonus and other guaranteed money.
I looked at 6 somewhat recent LT deals for high caliber players.
Joe Thomas - 10M/yr (8 yr 80.5M)
Jason Peters - 10.1M/yr
Jordan Gross - 9.4M/yr
D'Brickashaw - 9.2M/yr
Doug Free - 8M/yr
Michael Roos - 7.2M/yr (signed in 2008 though...)
Beatty - 7.5M/yr
So, you'll pretty much see two or three levels (depending on how you like to break it down). Basically there is a 7-8M/yr club and there is the 9-10M/yr club.