Champion Select Drop Down Menu

In champion select I think it would be helpful for there to be a way to narrow what champions are seen on screen at once. I know we have the handy search bar but that requires you to have a champion in mind. What I'm suggesting is a much broader system. It would be a drop down menu that let's you choose between all, mages, assassins, fighters, tanks, etc. When clicking on that it would narrow the champions available to pick to that subset. So for example picking tank would only show you every tank you currently own but none of the other champions.

To take that further it would be better if we could edit those list. So if one picked support maybe Orriana could also appear under that list as well. Or maybe if you were to pick junglers you could have Aatrox and Olaf under that list as well.

This is really just a way to make champion select not so much easier but an easier way to see all of your options. When you own a majority if not all of the champions in the game, you can easily over look champions. By adding this system you can easily see your options in champion select without always defaulting to the same people.

Please give me feedback on this idea. If it makes sense, if it could use some changes. Please and thank you :)