I don't think anyone has an issue with trading up, but you have to be realistic about it. Some people are screaming about the new system as if it is some kind of moral outrage and denial of their rights to trade their $10k week for a $40k week "like the salesman promised".
Although the points system directly negatively effects me, I think it is hypocritical to feel outraged. The old system was used to benefit a small number of owners at the expense of the majority. Whether it was through lack of understanding, flexibility, resourcefulness, etc. does not really matter. Every uptrade requires a downtrade. It is a zero sum system.
When Marriott sold every week for approximately the same $$$ then the weeks were truly comparable. When Marriott sold weeks during the real estate boom for 40, 50, even 80+k per week
then my Horizons gold is truly not comparable.
I understand why Marriott wants to take better control of its inventory and wants to reset trading on a more comparable basis. They want to maximize the perceived 'fairness' for everyone, but especially for the people who spent the big bucks directly with them. I believe the new points charts are a more direct relationship to the relative values of the week.
Tuggers have always know that July 4th was worth a lot more than Nov 3rd even though they are both Platinum. We reaped that value from the other owners. Now there is another system where the values are available for anyone to see. This creates new opportunities, which is why I will enroll and keep my options open, but it is just a different way to distribute the value over more owners. The weeks will now go to those willing to PAY for them, vs. those who get lucky or get an II rep who wants to earn a commission. I believe that is why Marriott is doing it, not some evil scheme.