hi, this is the task for the viewport pies update to 2.81.
I've made some significant changes.
Hotkeys better reflect built in mapping. Hotkey conflicts improved. New hotkeys such as "Q" for quick favorites changed in the pies.
Void keymaps now used in Blender by default pies have been removed.
Workspace addons filter is now respected. 2.8 behavior is unacceptable. Addons keymaps need to respect workspace activation. This was solved by using the "Official Pies" registration and sub module code. In 2.79 the Viewport pies took care to not "enable all at once" to respect the "Official Pies"
I've disabled some of the "Official Pies" already after discussion with @Sebastian Koenig (sebastian_k). I think it's also the time now to merge what's remaining of the official pies into the viewport pies. there's conflicting keymaps and not much left there it's easy to absorb. There use was serve I think as now there's defautl blender pies.
Here's some of my changes:
This is not finished yet but I would look at committing within the week so I can write once the manual entry for the documentation.
Note: Looking at the "Official Pies" addon it's all duplicated and fixed by the Viewport pies. It served it's purpose in 2.7x now it's void. Will be removing shortly.