I don't know if I'm posting this in the right place, but for some reason the layout for z10/30 should be changed a little. I think it could be smarter when there is a upper and lower limit of the layout where no App, better nothing has acces to. For example, when ever we open a app or some System settings the upper screen Information like time or battery stat, signal of the network is covered by this app. The same for the lower part of the screen where we can quicky access the phone and search function.
So imo it is for a better useability of that this two layout areas are protected.