Then don’t invite that person. This is how it works now.
That’s the idea, yes.
You missed the point. The proposed change doesn’t harm the people participating in the Raider IO environment; it keeps private the information of people who are not.
And here’s where we disagree (it’s my turn, I guess!). It won’t cause problems, it will be easy to implement…
… and as for the people who have issues not being invited to groups because of Raider IO? I hate to be this guy, but for a variety of reason, they’re wrong.