While Spybot Anti-Beacon is simple, free and easy to use...these are the drawbacks (limitations) provided by various reviews of the product.
Spybot Anti-Beacon Review by PC Advisor
Spybot Anti-Beacon is very easy to use, but provides no explanation of what it's doing, and doesn't allow you to disable/ enable most settings individually. For experts only.
Spybot Anti-Beacon Review by Betanews
Unfortunately...there's no detail on what you're disabling, and no way to toggle individual settings: it's strictly all or nothing. The only detailed control you get is under the "Optional" tab, where you’re able to tweak any or all of four features: Web Search Group Policy, Cortana Group Policy, OneDrive Service and Remote Registry Service.
Spybot Anti-Beacon Review by the WindowsClub
The tool unfortunately does not give you the option to select the feature/s that you may want to disable.
Spybot Anti-Beacon Review by Softpedia
...there is still room for improvement to meet the users' requirements. At the moment, there are competitor applications that do more. For instance, it would be great to have the application disable the access of apps to wireless connections, block localization access and services, disable the automatic Windows updates or the feedback reminders.