Champion Mastery

I'm wondering why there's no way for others to see what champs you've gotten to level 5 (besides the top 3) I personally have 5 level 5 mastery champs, and if you viewed my account, you would have no way of knowing 2 of them. Whenever I make a new friend, I usually check who they play the most, and considering the age of the mastery system, most of them have at least 3 level 5's, so I can't tell what the rest are? I feel like that would be a helpful and easy to install feature!

P.S. If by some chance it's already in there and i just missed it, try not to be tooooo mean when you call me out on it xD