Idea for Pre-Game UI

I think that we should be able to create custom tabs for champions similar to custom item builds for specific champs. When I am selecting a champion I decide what role i want to take on but then have trouble picking what champion I want for that role. So to amend this; I propose during the champion select ui be modified so that players can create custom character tabs. For example if im looking for an adc, i would click on my adc tab and a list of champions that i deem viable adcs would only appear on my screen. Please Rito it would make champion selection alot easier.