@Riot: Shouldn't you update the costs on some older mages since mana regen was nerfed?
I hate having to pay 130 mana every 6 seconds to use Lucent Singularity as Lux. You don't have the luxury of NOT spamming it late-game, and even with double Morello you end up with burnouts.
Or say Anivia; even if you get Archangel's and Grail, you are going to mana-burn yourself, especially in early game when your low regen basically screws you over.
I could provide other examples, but you get the idea: adjust mana costs so the level 5-9 time period isn't so brutal for mages.