The worst reason to purchase
DVC is " what will happen in 40-50 years" first of all, no one knows. Worry about the next 5-10 years.
Second, Only purchase at a resort you love. If that resort is not VGF or RR then don't purchase direct.
Right now, direct VGF is the only one that will not instantly depreciate 28%-38%. Some of the DVC direct prices like BLT are $100 a point more than resale value. Get an Excel spreadsheet ( pre-made ones are available) and do some cold impartial math. If your purchase does not save you money in less than 10 years - skip it. BLT direct on a 10-year timeframe is 3975(e) + 1062(m) which is over 5k for a week in an LV studio. The cash price is 4,750. So using a mid-priced week at BLT you will not save a dime buying direct for the first 10 years.
Now resale 2400(e) + 1062(m) so 3500 for a week - is a good deal. That's $1,500 per week vs rack rates. or 15k in the first 10 years. Now does that occasional use of the TOTW lounge sound like something you would pay an extra $1500 for each trip? Because that is the only thing you lose if you purchase BLT resale and like the BLT. Don't let Disney distract you with "lounges" that are not guaranteed.
And don't worry about dining and merch "discounts" since the Disney Visa gets you similar discounts. The same for AP - they are not worth it for a 1 week's vacation.
And don't have FOMO over unbuilt magical resorts, first of all, they can end up like Reflexions and never happen. But more realistically, they will be like RR, a built-to-price, Marriott-style, box-like tower hotel, that lacks the charm of the original quality themed resorts.
Even if you like the new resort, if you buy resale you can sell it, historically speaking, without taking that 35% loss and buy the new resort so you are not closing your options.