When you double click a bus or fx header in the inspector that has plugins loaded on it you get to see that plugin chain open. When you don't have plugins and you double click the header it does neither show you the console channel nor open the channel overview. I would like to see it open the channel overview when you double click a brand new bus or fx channel. This would save me a ton of mouse clicks personally.
I think it would be wise to have show destination when clicked in the sub menu to show you the channel in the mixer while double clicking the header should bring up the plugins on the bus/fx channel if none then channel overview.