Personally I would need far more information before making such a decision. Generally speaking I can only think of a handful of reasons which would prompt me to sell:
1. Change in vacation habits. If I weren't visiting WDW or DL as much in the past, I would consider selling some points. But that doesn't have any real correlation to a reallocation.
2. Feel abused or manipulated by
DVC. If I felt that DVC was running the program in an irresponsible manner, I would prompt me to reconsider ownership. But that's certainly not the case with a reallocation. We all knew going in that it could happen.
The entire foundation of DVC is supply and demand. There's a reason that New Year's Eve costs more points than a Wednesday in September. There's a reason that Savanna View costs more than a Value villa. And it really wouldn't surprise me if a BoardWalk view villa one day cost more than a pool view at BWV. These types of adjustments are
necessary in order to make the system work.
3. The value of DVC is diminished. This is where a reallocation
could come into play. If I suddenly find that using DVC points for a certain destination is consistently less economical than paying cash, then obviously I would sell.
This did happen with the weekday/weekend reallocation to some extent, but not to any level that would have me considering a sale. If DVC can justify charging more points for a given villa, it stands to reason that CRO is also charging more dollars for that same room.
Certainly there will continue to be changes to DVC which alter its value (or at least our perception of its value) to each individual member. But even when I am "hurt" by a reallocation, a decision to sell will be a very measured response and driven mostly by questions as to whether there is a more economical way to secure similar lodging at these Disney destinations.