Now that I have had some time to think about it, my conclusion is that, assuming Disney decides to charge a nightly resort fee that is designed to cover all the cost items mentioned as being part of the charge in the survey, then it is unlikley there will be such a nightly resort fee charged to
DVC owners. Besides that all or some of the cost items may already be included in annual dues, the only way they could be charged to members as combined in one "resort fee" is as a common expense charged as part of the annual budget and dues.
The $15 nightly room fee in the survey is designed to cover Disney's Magical Express, MagicBands, FastPass+, Resort entertainment, WiFi, Extra Magic Hours, and parking at the resort and parks. It raises three issues for charging it as a nightly resort fee to owners staying at a resort: (a) is it something that is already included in dues and thus cannot be charged; (b) if not something already included in dues does it have to be included in annual dues if it is going to be a fee that can be charged to members; and (c) is it legal to charge members for the identified costs.
It appears likely that many, and possibly all, of the listed costs are already charges that are included in annual dues. The fact that Disney wants to make it a resort fee itself indicates that it has already been accounting for the listed charges by charging them to the resorts, with the result that the association budget would have already included the costs. DME should be included in the Transportation cost item and WiFi in utilities, Magic Bands, since they are associated with the resort as room keys, would likely be in the general "other expenses" that the association needs to cover in the budget, see Bylaws section VI.1. Resort entertainment would likely be included in Member Activities as a charge for rent of recreational and other common facilities at the resort, id. The outliers are costs of Fastpass+, extra magic hours and parking at the parks, but I am guessing those are things actually already being charged to the operations of the resort and thus things the association may be charging as other expenses as operational support items in the administrative budget item. Thus, at least for some of the items and possibly all that are mentioned, they are already included in dues, and charging members a resort fee would be improper double billing. Moreover, the association budget needs to be based on costs of the services, not costs plus a profit.
Even if any of the items are not currently charged to members in the annual dues, they really cannot be added as a nightly resort fee payable by all the members when they stay at the resort. It is possible that some of suggested charges could be made to members and others based on actual use of the service, e.g., a member could be required to pay a parking fee when he parks at the parks, or a DME fee when he uses DME, or an extra fee for Extra Magic Hours when he goes. However, to do that Disney would have to take any related charges already in the annual budget out of the budget. To charge the costs as some combined resort fee chargeable to all members when they stay at the resort makes it a common ecpense of the resort. The DVC resorts are not Disney Hotels to which Disney can just tack on a nightly resort fee when it feels like it.The resorts are legally the responsibility of the applicable DVC association (and its chosen management company, DVCMC) and if there is to be some general resort fee to cover the costs of any items provided by another Disney entity, the only way it can get charged to the members is as a common expense which legally must be part of the annual budget and charged as part of annual dues, not as some nightly fee.
Finally, there is one charge I doubt can legally be charged to WDW DVC owners at all, even as part of annual dues, and that is a fee to park at the resort (other than assisted parking like valet). When you purchase, you get an ownership interest in the common elements and a right to use those, and also the obligation to contribute dues to maintain them. That right alone might not be enough to avoid rental charges for items at the resort, but for parking there is a separate right. As part of the purchase, owners are granted an easement to the roadways, walkways and parking lots at the resort which includes a right to park in available parking spaces. See, e.g., Declarations 4.1(c). Since you paid in full for that easement right as part of the purchase price, Disney should not now legally be allowed to start charging additional fees for owners to park at the DVC resorts.