One thing that really annoys me is a bunch of items in the Windows Start Menu that I don't use or don't work. I tend to throw such items in a "General" folder and forget about them.
However, some systemapps have entries in the start menu that seem to be hardwired -
Connect
Cortana
Microsoft...
configuration
cortana
customization
desktop
entry management
folders
general folder
microsoft edge
miracast
navigation
settings
start menu
systemitems
task management
update
user experience
user interface
windows 10
windows apps