Nevermind... It just occured to me that HOTSPOTS are what's unlimited/untrackable in my visit, not plugins

I can simply hide all the plugins I want to hide individually and then use hotspot.visible to hide all the hotspots, achieving the desired result. Still, an alwaysvisible="true" attribute in a hotspot/plugin would be useful to make it "immune" to plugin.visible=false or hotspot.visible=false (in practice, such an attribute would just create the plugin/hotspot in a different parent movieclip).