That would be five systems and my comments center around two of the five. If owners in Shell, Wyndham Club Plus, and WorldMark that are interested in following their own club or clubs, then they may very well might want to follow closely what was referred to as "One Company" in a recent owners update. Topics discussed at the update was the emerging changes pertaining to availability pools, Shell Properties, the increased use of the the term Communities, and a new community being referred to as 55 plus 8, and Wyndham Club Pass. The two programs that primarily were mentioned were the old Fairfield properties and the existing Wyndham Club Plus/Access program.
I think where you go wrong is right here (Ive underlined and bolded it in your comment quoted above) when you say Club Pass is the 5th Wyndham timeshare system...it is not.
Wyndham Vacation Ownership develops, markets and sells vacation ownership interests and provides consumer financing to owners through its four primary consumer brands,
CLUB WYNDHAM®,
WorldMark by Wyndham,
Wyndham Vacation Resorts Asia Pacific and
Shell Vacations Club.
Club Pass is an exchange program to enable members of Club Wyndham and Worldmark to use each others resorts. It will probably be extended to Shell and my guess is Asia Pacific too
That you think of Club Pass as a new collection of resort inventory leads you down a wrong road.