Idea for a new "title"-ish thing

I have an idea for a title for the profile page or the loading screen or maybe even in-game.

So you know how in various games when you do something, you get a title like "The kingslayer", "Explorer" etc.

So how about something like that in the league of legends? My proposal is this :

If you achieve Mastery 6+ (maybe 7) on all champions of a certain race or citizenship (Yordles, Piltover characters, Ionia characters) etc. you'll get the title (with these examples, in order): "The Yordle", "The Lawful", "The Spiritual", or for demacia : "The Just". I think it could be a great idea for this to be implemented into the game.