So you are angry about losing mana regen in the mage item rework...
You guys would feel so limited in season 2 given your current lack of mana management brought on by all the mana regen in the game currently. There was no Athene's only CoH which was considered a joke item for all but Galio. Mana costs were across the board higher and a mage had no mobility item outside of Lich bane. IF you wanted to get your mana restored you had to back for it or build 2 RoA, get blue buff, Or build an archangels which was the only good mana regen item that was worth getting and took forever to stack for any champ outside a couple like Karthus.
I am really glad they are finally making players have to learn to manage mana to some degree again or have to back more often if excessively using abilities for little to no effect.