"Favorite System" in Champion Select

I came up with an idea today when i was playing some ranked. So pretty much, I was wondering if Riot could implement a little add-on to champ select where you can "Favorite" or "Mark" a champion(s), and they will show up in another tab, similar to how the roles have their own tab (Assassin,Fighter,Tank, Mage, etc.). I bring up the "Marking" of a champion too because sometimes some people dont know what to ban, and I also remember what to ban at the last second. Marking a champion could be before the game in maybe the champion profile or something along those lines.

I feel as though it could be a nice feature to the champ select as it makes selecting your mains/top priority bans more accessible.

Give me your thoughts!