Pool Hopping as a DVC perk originated because the original OKW pool was so, well, quiet. (And OKW was heavily marketed as a place for granparents to take their extended families, meaning lots of kids.) BWV opened with a "themed" pool with a slide. VWL had access to the main pool at WL. By the time BCV opened, DVC members had already been told that SAB (I hope I am getting these right) was OFF LIMITS to the rest of us. As well as AKL. Plus, we got increasingly persistent reminders that ANY other resort could limit our use of their pool in case of seasonal overcrowding.
Now is any one pool (except maybe for SAB) currently that much more attractive than any other? Not really. Pool-hopping will wane as an issue, then suddenly be formally done away with. So CMs can spend their time guarding against outsiders slipping in and overcrowding the deck chairs. Maybe that is the real issue anyway.