So my wife and I are just regular resale owners (259k points), and this points deposit feature...well, I'll be blunt, it sucks.
I can understand them wanting to eliminate the capability of bring reservations forward into this use year. But now, instead of having to plan vacations 10 months in advance, I must plan several years in advance so I know what year I want to move my points to. For example, if we want to take a big family vacation two years from now, but there is no guarantee that it will actually happen, I have to move my points into two years from now's use year, and then hope for the best. At least with the credit pool option, I could be flexible and use them how I saw fit over the next few years.