Just some simple rules to remember:
1. Your use year determines when points are issued and to when there are good. Points issued Dec 1,2001 are good to Nov 30, 2002. And they are good for a trip during that period.
2. That use year has nothing to do with when you can call to make ressies (which is always 11 months in advance at home resort, 7 at others) and when you can go (any time of year).
3. The points you use for a trip are determined by the date you will be at WDW not the date you call to reserve. Thus your points to be issued Dec 2001 are good for a summer 2002 trip and there is no banking or borrowing involved to use those points for that trip. You would need to bank only if you want to use Dec 2000 to Nov 2001 points for that summer 2002 trip.
Bottom Line: If you want to go in summer 2002 you can call to reserve your home resort now if you are talking about a trip in June or first half of July, and if you want to use Dec 2001 points you would just do so without banking.