Will Wayland ever support graphical sudo?

On the X desktop, I ocassionally used gksudo or just sudo somegui to launch GUI applications as another user, including root. I recently discovered that this is not possible on contemporary (early 2018) Wayland desktops. All applications must launch as the current desktop user, and are limited to the privileges of that user. Is this a permanent feature of Wayland (there by design), or is su-type usage an enhancement that has not yet been implemented? *I'm looking for a documented statement (roadmap, design page...), not preference or opinion.*