Able to Show Your Pick During Champ Select
Have it so people can "hover" a champion, even when its not there pick, so that only your team can see what it is. Have it dimmed out so you still know who has and hasn't picked, yet still show up so that you can get a general feel for your team comp and make adjustments to your pick based on what your team is picking. Heroes of the Storm has this feature, and it is extremely handy. Lets say I want to play a mid-lane champion that has some heavy cc. So, I hover over, lets say, Lissandra. My team can then adjust picks to enhance Lissandra's strengths by picking something like an AOE top laner, or a more risky ADC such as Varus, knowing that they will have some good peel. Or If everyone hovers over their champions and I see that we have no good tanky Champion (and I am first pick) I can pick something like a Shen or Malphite, knowing that my team is going to pick squishier champions. It really wouldn't be hard to implement this, but it could make a big difference