Server based username anonymity

Hello,

As of currently there's no possible way to stay anonymous for people in any servers. I was thinking that it would be great to add a block-like feature that you can use to hide your username from people you wouldn't want knowing about you being in X and Y servers. The feature could have a limitation so you can't “block” server mods and admins, etc, from seeing your username. 

When “blocked” users try to DM you they could be redirected to a whole new profile that you've created in the X or Y server. 

These are just my ideas of course that can be used to build on for a better system. In my opinion this would be a great feature for people that want to express themselves as they want to in fun communities but don't have the chance to because they are in fear of being found out by their real life friends, people, etc.

-Zava