Yes, let's create a whole new source of confusion for users, where an app is either delete or merely invisible, with each app preference pane adding a new control. And then when invisible, and the app is opened via Siri, or search, or from the Today view in Notification Center, it only appearing in the multi-tasking view, but not in the icon grid.
All for the benefit of some OCD ******** for people lacking coping skills. Brilliant.
You must get confused quite easily... I for one could handle a "hide" option without blowing a gasket.