It's going to cause more problems, than it can solve.
Companies now google your name, if you're looking for a job, spammers will abuse it even more, not to mention trolls.
Even the IG version is flawed. I mean, sure, I will use my real ID with real life friends, they know my name already, so it's fine. What's not fine is, that everyone else who is on my friends real ID friends list can now see me too. That's retarded.
Imagine your phonebook on a cell, you add somebody and now you can see his whole list and he can see yours...