tooltips for summoner icons

for years now I've thought it would be completely legit if there was some kind of a tooltip that would pop up when you mouse over summoner icons that explain what the icon is/how it was gotten. So many cool icons that the significance has faded from memory like last months chocolate fondue.

while im sure it would be a lot of coding to be able to do so in the loading screen, at least perhaps in the main client?