On the other hand, Worldmark is more geared to Western US travel, where Club Wyndham offers more options in the East.
And a respectful point of contention: CWP VIP discounts are subsidized by the developer, not non-VIP owners. If a VIP gets a 50% points discount, Wyndham backfills the discounted points from developer inventory. GC revenue goes to Club Operations, not the associations, so free GCs don't affect the associations or other members. There may be a minor odd benefit that affects non-VIPs, but it doesn't come to mind for me right now.