Best friend selection? Able to see a friends' loot and collection!?

Me and my friend struggle to see what one of us recently or already got a character, a skin, or whichever it might be that they own. Instead of always typing or sending pictures what we got, it would help so much to see what they have.

"How do we do this?" Well, once you are friends with a summoner, you could have an option available on when they right-click on a name. Which already gives you the selection to invite, send message, spectate, invite to club, view their profile, add note, unfriend, or block. But, I think there should be an option to ask to be Best Friends? Best friend invite? Whichever u call it, I think it would help a ton.