Who's that friend?

So one thing I've noticed is that I find a ton of people I like to play with in game. I generally solo games until I find a player with a playstyle that matches my own and then ask if they wanna duo after the game is finished. I do this quite often and as i've repeated this process it becomes a game to figure out "who's who" Are they that Yasuo from top lane that one game. Or the Volibear ? Ect. I really like that you can see off the bat the three most time put into champs on their profile however as I add more friends that I like some of those start to get mixed up as well. I think it would be cool if Riot were to do something along the lines of seeing the 1st match you had with them and/or having a way to uniquely identify friends in particular. Also I like that you can add notes to people but sometimes I don't alway do that and sometimes i'm not sure myself of what note I should put to remember them from a particular game. I figured that Riot or someone else might this and have much better ideas on how to identify uniquely each player among so many players in the game of League of Legends. Anyone feel free to add or take away from this idea and input anything they wish on the topic!

P.S. I wasn't sure which board to put this under.