@Riot - Can we give Irelia energy?
I don't see why not, she looks perfect for a champ that needs energy instead of mana. Maybe they'd have to nerf some of her abilities and take away her true damage on W to compensate.
EDIT: Found a rework for Irelia that uses energy. Take a look at it, it's pretty good. http://leagueoflegends.wikia.com/wiki/User_blog:Akali/Akali_does_reworks!