I have some presets for the PLE, yes, it’s very powerful in specific cases. What I’m talking about is quick and dirty visibility agents / channel filters.
From left to right: Mixconsole Filter Channel Types, Project Filter Track Types, key commands under Mixer category.
Now, if you have these options selected:
You’ll see that those Key Commands on the right (which are toggles by the way and not only Hide) when fired in the mixconsole they update the project’s visibility as well. I love it! 
My question is this: Since ALL of the commands on the right work in the project when fired from the mixconsole, except for Hide: Inputs and Hide:Outputs (in the project window they fall under the Other Tracks option), why are those key commands under the Mixer category and don’t pack up and go to Channel & Track Visibilty category instead, so we could call them from the project window too.
I mean it’s a job well-done, why not extend it to its fullest? Is there some clash that I’m not seeing? With “Sync Track/Channel Type Filters” off only the window that has focus would get the command. But when it’s on, wouldn’t you expect the sync to apply both ways?