Excluding all products from a specific Vendor is highly useful as there are some that might introduce new products that we don't want in our environment, even if the few folks with local admin rights have installed them. It would add flexibility to prevent future products from a disliked, untrusted, or competing Vendor being auto-enabled.
Sorry, I shipped the wrong idea. This one is still pending.
Quick screenshot, forgive me terrible editing skills
You can now exclude products from being enabled as a right-click option per-product.