I am with DIOXIDE45 on this one. My mantra to everyone for the past many months is to distinguish your comments in your posts between your rights to reserve and use your Marriott week (which are deeded rights that you bought directly or resale) vs. a trading program (which is governed by its own rules that you agree to).
These are distinct issues which everyone must understand. Your rights to reserve (ie. 12 months/13 months), gold/platinum/bronze, and use, sell or rent your deeded condo interest are up to you and cannot be changed.
While you can "deposit" your properly reserved week with any organization you want who will take it (ie. redweek, Interval, etc), you are then subject to their rules.
Marriott's rumored internal trading system is just another trading system (ie. redweek, Interval, etc). They can make any rules, charge you any fee or offer you any points structure they want and you agree to their rules if you join their program. What they cannot do is UNILATERALLY alter your deeded reservation and occupancy rights (unless you agree by joining their program.)