What if... We had custom champion-select pools...
We already have customizable item set pages that allow us to assign certain item pages to specific champions, so why not add one of these systems to champ select... If you play ranked, you Main certain champions for each role. My idea is that instead of typing in "marksman" and have every marksman come up, you can create a custom class special to you. Ex) instead of typing "marksman" and getting all the marksmen/ you type in your custom class "adc" and vayne, jinx and kalista pop up.
Just a neat idea :D