Suggestion for Hextech Crafting

While checking out the boards earlier today i saw a post regarding someones opinion on hextech crafting. Going though it i saw this list of information. 1: You get chests for obtaining an S+, S, or S- rank in a Summoner's Rift normal or ranked game. 2: If you are in a premade party with someone who gets an S+, S, or S-, you also get a chest 3: You start with four potential chests. You are given a refill every week, and you can store up to four at a time. 4: To unlock a chest, you need keys. It takes three key fragments to make a key. 5: Key fragments have a chance of dropping upon a win. 6: Your chance of getting a fragment increases with the number of people in your party 7: Your chance of getting a fragment decreases exponentially with the number of fragments you have already earned this month. 8: This "smooth" curve is somewhat logical, and resets every month. 9: You can only get one chest per champion per season. I knew of every step here with the exception of number 9. I had been wondering why i havent been receiving chests on certain champions when i received an S and now i know why. However, the problem is i do not know which champion si have earned an S on so far. is it possible that some system can be implemented that lets one know what champions they have earned a chest with? This would help clarify hextech crafting for me and im sure other players as well as encourage me to play a diversity of champions.