My big problem with those resorts is the traffic walking the other way (IE non resort guests with super easy access to the resorts). The lobby in Grand Cal is worse than Grand Central most days, regardless of season, and a ton of that foot traffic is transient theme park and DTD guests wandering about, looking for a "quiet" bathroom, etc.. The same issue exists to a similar extent due to Monorail access. (Full disclosure, I did that too before becoming a member...LOL)
Now, don't get me wrong, I think the beautiful lobbies should be shared with everyone, but I kinda like a little tranquility when I'm done with the parks, or trying to enjoy my morning coffee and breakfast. That's why I prefer WL. Sorta close, but not so easily accessed as to be open to the hoi polloi.