I don't see much that would change for Ford Int'l if this merger goes through. It would be different if the two of them at present accounted for 90% of the business, but they don't. NWA may have the lions share, but enough other major airlines keep there foot in the door here, and would keep things some what balanced.
In the grand scheme of things, I love hearing about airline mergers - there are way too many seperate carriers in the US. The law of supply and demand would have taken care of that a long time ago, but some people seem to think that these "struggling" businesses need gov't bailouts and constant bankruptcy protection. When at any given time you have 2 or 3 of the top 10 players in any industry in bankruptcy, that means there are too many, and some need to die a natural death. Whether they fold, merge, downsize, whatever, in this industry I think it is a very positive thing. Supply and demand along with fair competition, are beautiful things. Why would any market need more than 3 or 4 healthy air carriers serving the same markets?
Besides, I don't think NWA and Delta have a whole lot of overlap anyway in markets served.