Derek -
First, take a deep breath and realize that this team is more than an OL player away from making any deep runs into the playoffs.
Second, go through the depth charts on the rest of the league and try to locate a backup ("serviceable" as you call them) that are better than our front 5. Then, realize that other player to make an impact here should be heads and tails better than the player here.
Third, if that team has such a quality logjam at an OL position that the backup is so much better than what we have here do you think that the other team is going to just give him up for a low round draft pick?
This OL is hampered by a couple of things. New system, few impact players on the wings, defenses knowing that there are few weapons on the wings and will blitz to their hearts content.
But, realize this OL is starting to build a core of players that, yes right now, are getting run over. Once they there are some weapons on the edge they will remember the crap they went through will be more than happy to turn it around.