Okay, there were other reasons as well, but if the agent had said upgrade to F then I would have jumped on it, but since she claimed it wasn't possible, I put the ticket on hold. The truth is, i have tons of miles that I never use and this flight won't get me to EXP. Furthermore, I really wanted to visit friends in OSL. Sure enough, NW matched and the fare was valid on KLM to OSL and on NW the flight will get to a higher status level right in time.