What's a Unique mechanic that you'd like to see on new champions?
I would love to see a champion based around the idea of granting vision... that doesn't last for 2 seconds or only give vision if the enemy isn't looking at where they are going
cough Metal ghost solid cough 
or a champion that uses alchemy and potions in a way that benefits allies
or even a champion who doesn't have a physical body and plays by "infesting" minions, objects and other champions would be cool ...maybe even give them the ability to infest enemy champions too for a short amount of time and apply extreme debuffs to them
Those are just some of my ideas.
What type of mechanics would you guys like to see in league?
So would I.