True, but I'd be willing to bet most weren't in preference prior to being available. If you can travel last minute, there are more than enough great weeks to get. There are also some great prime weeks that aren't put in preference when deposited outside of flex (haven't figured out the rationale of when they do, and when they don't for prime). I've picked up several great trades into Hawaii Marriotts and Westins with my Vacation Village unit; however, I'm not talking about those that weren't preferenced. I'm talking about the ones that start in preference.
I still stand by my main point: unless the preference period is shortened, it won't add a ton of value. I'm open to being wrong; quite frankly, I hope I am. I just don't see it happening if the preference time remains the same.