Do you know that neat little infographic that Dota 2 has?
One that highlights your teams composition.
That would be cool to see on league when you are in draft selection and as you highlight certain champs, it will show what kind of composition your team has, whether you have melee, ranged, AP, AD, tank, fight, carry, late, early etc. Nice things to let people know what the composition is.
Even if people know what the composition is, it still seems a nice idea.