Northwest will get new planes and then work on expanding more although some is already underway (Italy service, more to Europe, and the huge MEM expansion)
Don't look to see NW/KLM try to get into a major alliance. They like what they have now and so do I. The service from these two airlines is much more personalized and consistent. NW/KLM basically market one product. NW/KLM has been and continues to be a major sucess in alliances. It is a global alliance as they fly to every continentant on the planet, just mostly at a smaller scale (for now).
My 2 cents