Summoner Icons idea/question

I recently received the new summoner icon for the Pick'ems and I was wondering where I received some of my older icons from? I searched the internet but there seems to be some pretty bad sites referencing this information and not all of the icons were even on the sites. I also noticed I'm missing a few, like Season 1 rank icon! I participated playing well over 100 games or so and I have every season except that one.

My suggestion is to have something in the client telling the user when and how they received each summoner icon? Like in that spot where it says "A summoner icon is a picture that represents you in chat rooms......" have something like "This icon was awarded on 2016-10-23 for 2016 Worlds Pick'ems bracket challenge and have 34 points or more" I'm sure it could be worded better. Also, maybe list how rare they are, like how many people it was awarded to (if it is possible)

With everything in my gaming I love to collect things (achievements, skins, awards) and summoner icons are no different. When I see one in the loading screen that I haven't seen I'm always searching for it online.

Thoughts?