I just got the survey today. It asked a lot of questions to try and determine what my preferences are in a points vs weeks system. By the way the questions were worded, it seems that Marriott is strongly considering moving to a points program with different resorts worth different number of points. With the number of varying factors that they proposed, they may end up with something like the DVC system or something else involving points. For example, weeks at high demand resorts worth more points than weeks at low demand resorts. The range that they gave was if exchanging a high demand resort, your week might be worth up to 12 nights at a lower demand resort and if exchanging a low demand resort, your week might be worth as little as 2 nights at a high demand resort.
The questions were designed to determine the range that the survey taker was comfortable with. It was also designed to determine what was more important to the survey taker, the maximum booking time, flexibility in resorts, flexibility in season, flexibility in number of bedrooms or flexibility in # of nights. Also, whether the survey taker prefers weeks to the whole points concept.
There was also a separate section to determine whether the survey taker would be interested in a program, which for a yearly fee, would get you membership in II, a 20% discount on meal purchases (maybe other purchases too), and elite status in Marriott Rewards.
I am not a MVCI owner, but I did take a tour a year and a half ago.