Win 10 works well, here, two instalations. Very little in Local Group Policy Editor is anything I'd care to tweak - no reason to.
When I do run into something I want different - which is how I sometimes feel about memory compression "feature", I find a reg entry that will toggle the behavior.
In principle though I'm with the majority: if the behavior CAN toggle, and there is no clear reason to block the toggle, the easier it is to do - say with Gpedit - the better.
@Winuser: Love your portrait/icon dude
1) oem-slp (system licence preinstalled) which are used by majors like dell and hp etc. These activate automatically and do not need internet access.
2) oem system builder licences. These are basically oem licences sold to system builders who sell pcs. Strictly these are not for sale to public, but MS turn a blind eye to this - the bulk of cheap oem licences on web come from this source. These require internet access like a retail licence.
Installer just means the trade people who build pcs and install an OS before selling it to you.
EDIT: looks like Lenovo has a 7 key in the bios ready to go if you order pro then downgrade yourself.