Let us tag champs for roles

How about implementing something where each player can tag champs they own as a different role? E.g., I can go through the champs I own and tag them "Midlane" or "Support" or "Jungle", etc., allowing me to create a pool of champs that I know I'm comfortable with in each role, but not have to scroll through 90 portraits in champ select. It'd be nice to be able to just click a box or type "Midlane" into the search bar or something in champ select and see all the champs I tagged for the lane (or jungle) I'm playing.