Give us an auto-ban feature for each game mode
Most people ban the same champion over and over for months at a time. For a large part of the playerbase the ban phase is a redundant waste of time. When we're in queue for any mode (solo/duo, flex, norm draft, aram) give a little drop down menu at the bottom of our avatar banner where we can search or choose from a list of champion names to specify a ban. A little circle of the champion's splash will appear upon selection with a red slash through it for everyone in the queue to see.
Not only will this speed up a large portion of the playerbase's queue times but it will also be a simple way to add an unobtrusive ban phase to game modes like aram where a ban phase would be welcomed but wouldn't get in the way of the quick and easy spirit of the mode.