Mastery Icons

I was thinking about how much I miss Janna's old icons and how much I'd wanna see them again in-game. Every time I watch an old league vid, I get semi-nostalgic lol. So I was wondering, what if you have level 7 mastery / reach a certain amount of points, that you unlock the ability to switch icons with previous ones. Maybe even be able to wear them as your summoner icon!

Thoughts?