Let us make custom tags

I'm not sure where this would go...

So, you know how there's a search bar for when you are selecting your champion? I think it would be great if we could create our own custom tags for different champions for what we want.

For example, I can label certain champions as "Midlaners", and if I type "Midlaners" into the search bar, it would bring up all the champions I have labeled as Midlaners. Or on the other hand, I can label the champions I have with Hard CC as "Hard CC", and now I get all the champions in my pool with hard CC.

QoL change that I'd greatly enjoy as my champion pool slowly grows.