Well we have issues after this next season with 3 starting O linemen set for big contracts in McClendon, Avila, and Dotson. Fano can Play either Guard or Tackle. Mauigoa can also play Guard or Tackle. Ioane also makes sense since both Avila and Dotson will be due big contracts after this season and it's unlikely we keep both.
Having mused on the issue though I can't see Snead going O Line with the 13th pick. Even if we don't sign both Dotson and Avila or either of them for that matter we've historically found our O line talent later in the draft. With development and good coaching we've put together a very strong starting five. Highest pick we've used was a 2nd rounder for Avila. Both Dotson and McClendon were 5th round picks pretty much, (Dotson trade had us sending a 4th and 5th for a 5th and 6th). Shelton free agent and Jackson rookie free agent.
Still I have no idea What Snead is thinking but O Line that high seems dubious at this point.