Actually, it applies easily to multiple resorts as well, with a little banking and borrowing.
For instance, someone owns just enough points under the 2009 charts to book their annual vacation at SSR, BCV and VWL.
In 2010 they are a few points short for each resort.
In 2009, they transfer in enough SSR points to cover the next 10 years or so, and begin the multi year banking.
In 2010, they a) use those banked SSR points for their SSR 11 month reservation, and bank additional points for the next year, and so on. b)They transfer in BCV points, make their 2010 reservation at 11 months and begin the annual banking ritual and c) they borrow their own VWL points from 2011 to make that reservation at 11 months. In 2011, they a)continue the booking and bankoing for SSR and BCV. b)transfer in a block of VWL points, make their 11 month reservation, and begin the banking sequence with VWL.
In 2012 and future years, they continue the banking sequence for all 3 resorts.
Under the multi-transfer limited point plan, they would be transferring in points for each of those resort each year until the end of their contracts.
As far as risk of "losing" used points, they have the same risk either way. Reservations could be canceled for any number of reasons (family emergencies, health issues, etc., and the same number of points lost whether they transfer yearly or do a single transfer/continual banking. And doing a single transfer in each of the next 3 years, with the current economy, will likely be cheaper per point in the long run, than taking the risk of finding someone to transfer the exact small amount of points they need annually.