Nope, I'm a staunch advocate of no-KH film happening. I just can't see it, no matter what. Even if it wasn't a direct retelling of any point in the series, how can you fit any person going through so many Disney worlds in all less than 2 hours with an introduction to the characters, setting, plot, and big final battle with a definitive conclusion. The KH manga pushes it to its limits and needs roughly 3 books just to cover a game and even then they pretty much skip every world except a few and rushes through those worlds for the most part. In a movie, would they just show montages of them beating up different Disney villains or seeing different Disney characters and just expect the viewer to believe nothing important happened in those parts in time. If they try to belittle the Disney aspect by doing such a thing, then the movie would just be unfaithful and bad and if they do put in a good storyline into the worlds they do include, the movie would be too long.
If the movie was about the keyblade war, don't get me wrong, I've always been curious about it, but I don't think you could sum up such an epic war in a few hours (Lord of the Rings had numerous films, all of which were quite long too boot).