It didn't happen that quickly, Havok.
Yes, the Madrox mini followed by the establishment of the X-Factor proper were huge things for we lowly X-fans. We got lucky there, and Peter David got lucky there, and damn I'd be a liar if I said I didn't love the man.
But you're forgetting the, what, one or two years where people did almost nothing with Decimation? Decimation, in and of itself, was largely useless. House of M came, and it did nothing. Nobody addressed it. We had horrible talent on the books. Claremont's return was godawful, and Milligan on Adjectiveless was a cluster**** of incredibly horrible proportions.
Carey and Brubaker's arrivals, finally, after too much waiting, yes, those were definite benefits. Messiah Complex has certainly shaken things up for the better - finally dealing with House of M, which was supposed to involve the mutants, a few years after it was written and published and read. Nothing like finally catching up!