I'm all for drafting a RB, but I don't like to do that early. Seems to me that is the position where success is most independent of where a guy is drafted. Unless you're talking about one of the clearly elite guys who tend to go top 5 or so.
Also, assuming Bridgewater isn't ready next year; if the Vikings aren't comfortable with Taylor Heinike as Bradford's backup and feel the need to sign another vet, I'd rather they just cut Heinike and find another young QB. I'd really like this team to try to keep trying to find a project QB that could potentially steal the starting gig or be flipped someday. Even if it only rarely works out I think it's worth the effort. If it's clear Heinike isn't capable next year, he's probably never going to be, try again.
Agreed on all points, and a decent RB can have success behind a decent OL also....fix the OL.