My winter plans are as follows:
1) new crank set, my old Alivio set is all bent up thus a great excuse to upgrade. I'm thinking of getting the new Raceface Evolve set depending on how it works and how much. If it turns out to be too much or not up to RF standards I'll likely go with the old Prodigy set (now called the Ride I belive).
2) new tires, I think my stock Maxxis Mofo XC's we really holding my speed back. I might go with a set of 1.9 Nokian Boallzabeena's (sp?) with some lightweight tubes.
3) new brake pads, stock shimano = crap. Might upgrade the calipers to SD5's as well.

If I fall into a lot of cash I'd like a 105mm MX Comp ETA combined with a low rise Deus stem and RF straight bar to bring the front back down from the 25mm suspension rise.