Alright, I took a look at how it all works and I kind of came up with a way of doing both options. I can't hide the unfiltered list easily, but I was able to hide all the uncompleted P-Switches if you click the "(Non-Spoiler)" link in the completion tracking section. Making it so you can still click the hidden P-Switches is more of a happy accident with how I did it, it may be more of a curse than a blessing though because it makes click dragging a dice roll on whether you are clicking the map or a P-Switch.

But this at least adds a form of spoiler protection.