If Marvel is, or was, going to make OF an ongoing series, it seems to me that it is a poor business move to allow its momentum to sizzle out.
Much of its backing is probably word-of-mouth and loyal Flight/Oeming-Kolins fans. I know that my friends are reading OF mostly because I gave them a free issue or two to get them into it. But, I am also sure that it has some sort intrest simply because of the "Initiative" banner that it has. Since Marvel has not taken advantage of the readers it has hooked now, would an OF ongoing four months down the road fail because people would stop caring?
It just seems like there are so many possibilities that won't be realized because they didn't bother to take advantage of a great series with such potential.