General :: Changing Priority Or Hiding Notification Icon From Status Bar

Is there something that replicates this feature?: changing a notifications priority/or hiding the notification icon from the status bar.

I know that you can permanently hide all notifications of an app via app info, but what I am looking for is something that will allow me to only hide any icon from the status bar, but the notification will still be there when I pull down the notification shade.

I currently use a ROM that has this feature, and I have yet to find it implemented in any other way or through any other ROM. I would love to go back to stock or an AOSP rom and use only Xposed modules, but this is the only thing that is stopping me. This feature is absolutely vital in my opinion in my everyday use.

You can see this feature in the screenshot below. When I long press any notification when I select the Hide status bar apps notification icon, the icon will not show up. As if it either replaces it (which I believe it does with a transparent dot) or just as useful would be to change the priority of the notification to low.

This just amazes me that I can't find anything else that does this. I'm hoping there is some type of xposed module that can replicate this feature, or anything really. If only i could find the code in the source of the rom myself to compile it into stock or something... Nexus 5