I hope not. I'm changing my phone number every few weeks at the moment. I have countless enemies who must be avoided.
Considering all the tales we hear about how easy it is to game mobile phone companies to reroute sims, it's not something I'm going to be entrusting any money to.
Correct, adding phone numbers to it will leave a lot of us vulnerable and makes us potential victims of the bad guys. I don't want to believe the OP didn't consider the implications of this action should it be implemented somehow.