Since they did not pick up a viable starter at guard I think we can sort of see how this will eventually take shape. I believe Feiler will be the swing guy and will go wherever he is needed most. The most obvious configuration with the most experience will be Al, Decastro, Pouncey, Wisnewski, Feiler. If there is a Tackle injury you have Chucks, Banner and Grey as depth. If there is an inside injury Feiler moves inside and your outside depth kicks in. If somehow one of the Tackles has developed to a starting player they may look at their best five being say a Chucks or Banner at RT and Feiler inside with Wisnewski playing backup at all inside positions. I kinda feel like they will need a third guy on the roster who can snap. Pouncey gets injured fairly often. If he is out you can't have one guy who can snap.