Oh there is...and it's easy, legal, and quick to do. You just eliminate the ability to exchange out.
However, if we want to continue to exchange out -- and I'm sure we do -- we just have to put on our big-kid pants and deal with the fact that there is no such thing as a free lunch.
If we want to spend a week in Hawaii, we have to pay for it.
DVC is not going to pay for our vacation, and it's beyond silly to suggest they return exchanged inventory to us.
The rooms that are sitting empty (if, in fact, any do) are
not leaving the owners of that inventory "high and dry." The
owners of that inventory are basking in the sun in Maui, and they are quite satisfied with their exchange.
It is also silly to suggest that DVC
give us inventory they own outright. They
do make that inventory available to us, and they offer us a 25% discount on it. I'm just glad they do that, and I certainly don't expect them to give it to us for nothing.