This is getting ancient already, you Powershell out all the crappy store apps, wipe 100% of everything in the %ProgramFiles%\WindowsApps folder, then MicroShaft releases another "Upgrade" and forces almost everything you cleaned up back on your systems.
Group policies allow you to delay "upgrades" and "updates" by up to 8 months each but that is it, but if you select the disable option you are forced to disable both of them so you can't get regular patches. So the best option we have is to disable upgrades by 8 months, leave updates at default and then hope that PS scripts hold up and can remove all their crap apps each time they release these new builds.
Microsoft, enterprises do not want Candy Crush on their work computers.. AT ALL. Anyone with a Simple Jack IQ or higher should have figured that out on their own. We also do not have even a 1% need or want for your store, enterprise controls doesn't change that either, that store has nothing good or even average to offer, it's a complete junk pile. Thanks for the ability to disable the store the store apps, but yet a policy so half assed it leaves all the tiles on the start menu that then just give policy errors to users, why even let them see it, just remove the things and cleanup the start menu.