I definitely don't think the bills will be drafting a lineman at 8, regardless of the situation. Losing Levitre, and then Rhinehart for depth, definitely was a blow. Depending on what the Bills do in the draft, and free agency, I can see the line taking a step back. If they don't replace levitre with a quality guard, I can see them suffering.
Was originally thought of to be a strength could now easily be a weakness if the Bills aren't proactive. I think Rhinehart was a quality backup..