The move of Saffold to RT is a pretty obvious indicator of the concern with Havenstein. Saffold wouldn't be taking first team reps if there wasn't a good possibility of him starting the season at RT. It also shows that there is no one else ready or able to step in at RT. Preference would be to leave Saffold at LG to continue the veteran presence next to GRob, but that would leave a worse hole at RT.
As for Wichman and Brown manning the guard positions, the hope is that they take the opportunity and run with it, lots of talent, but more experience needed. Look for them to get a lot of 1st team reps. The value of Reynolds in this equation cannot be underestimated, he gives depth at either guard position and can fill the RT job if needed. The one huge thing that was lacking last year going into the start of the season was a line that had practiced together throughout camp. Not having a set OL until right before the first game, followed by the injuries and all the subsequent OL combinations made for significant challenges, some met, some not.
Look for continued development of Andrew Donnal and the addition of Eric Kush will give a good back-up to Tim Barnes. The battle for the final spot or two will be one of the stories of camp. Williams may be a bit late getting back into full reps as he continues his recovery.
I for one think the OL is going to be a strength of the team, barring last years slew of injuries. Here's to a healthy year!!