Why doesn't Firefox come with a Mozilla Tools section in Settings which allows easily to enable those services + a button to that settings page on the (bottom/top right) new tab page. This way it would be reachable, but at same time, not so intrusive as it is right now. I would even go as fare and say that the dev-tools should be an addon too, and not ship by default (because probably 99% of the users never use it).

It should be possible to create a delightful browser experience, which respects user privacy and enables power-users/developers to do more.