For a time in the 1990's, the Christmas holiday period was a designated special season preference list. The home resort priority right did not apply. You could put yourself on a list for any paticular resort, including one not your home, for the Christmas holidays starting two years in advance. Then at about one year out, MS would start calling those on the list in the order on which they got on the list to determine if they were or were not going to actually reserve the period specified, and would continue making those calls until either the resort was full or the list ended. That special season list was ended, and one was likely never adopted again, because it was too much of a hassle for MS to handle every year. I would not expect another one to be created except possibly for an unusual occassion such as the Olympics coming to Orlando.
They do not have the right to charge reservation booking fees for any DVC resort reservations made by members, whether home or non-home. The documents provide for how the costs of the reservation systems are to be paid as part of dues and breakage income, and the contracts with the Disney entities that run the reservation systems do not allow those entities to charge additonal fees for member reservations of DVC resorts. Moreover, under Florida timeshare law, any fees outside of dues, or the reservation of a right to charge such fees, for making reservations at the timeshare resort must be clearly spelled out in the public offering documents or no such right will exist, and a statement that the developer generally reserves the right to change or amend the documents is insufficient to constitute a reserved right to charge reservation fees. Those restrictions, however, do not apply to non-DVC resort reservations and thus you have the $95 fee for trade-outs to non-DVC resorts.
As to taking away rights to reserve DVC resorts other than your own, it is a lot more difficult than some have suggested. Once a resort is made part of the multisite DVC system, the documents provide that it will remain a site in that system until its DVC end date and subject to reservations by owners from other DVC resorts unless it is earlier removed from the multisite sytem and that can only happen if: (a) a resort is destroyed and cannot be rebuilt; (b) the resort is taken over by the government via eminent domain; (c) the relevant Disney entity managing the resort or the inter-resort reservation system becomes insolvent or goes bankrupt; (d) the owner/members of the resort (the actual members not some Disney designee), by a vote equalling at least 60% of the ownership interests in each and every unit in the resort, vote to remove the resort from the DVC system or vote to remove the Disney entities that are manging the resort; or (e) the applicable association and the Buena Vista Trading Company (the entity that is responsible for the reservation system for the multisite reservations) mutually agree to terminate the contract to provide such services. A though D are obviously events highly likely not to occur. It is (e) that might create some concern but the relevant entities are deemed fiduciaries of the owners and thus better have a real good reason that benefits members for terminating the contract. DVD does not have any right or discretion to change the reasons allowed or ignore them or to just abolish the multisite sytem if it feels like it. Note that in the situation of destruction of all or part of a resort, there can be temporary suspension of rights to reserve the affected resorts or parts while there is reconstruction.