The better option is to make this FULLY OPT IN for the admin. Don't enable or display ANY of it ANYWHERE until an admin of the WHMCS installation reviews and decides to offer it. Ourselves, as an example, host the websites we design/create almost exclusively. There will never be a time in the foreseeable future we would want our billing system to advertise a self service web design type application. The WHMCS logic is "add it without asking, and see if the complaints are large and loud enough to make it optional".
Not for the first time, as I recall (I'm reminded of the unwanted SSL icons, checks and 3rd party links, for one).