It'd be awesome if we could customize the menu bar icons. Perhaps you can partner with the guy who already created an awesome app for this feature. I think it'd make a great addition to BTT! I'd be happy to pay a few more bucks just to include this feature.
I second this idea. I think Better Touch Tool would be awesome to also include Menu Bar Customizations like hiding, adding buttons, adding widgets, and similar. Kinda making the Menu Bar a second Touch Bar .