Something to think about regarding removal of Mana Pots
One change that I feel is not discussed enough in regard to the removal of mana pots from the shop is the mastery system.
Before, if you wanted to get mana regen from your masteries as a mage, you'd need to go deep into the utility tree, forsaking the higher tiers of the Offense tree.
Now, the mana regen mastery, that by the way scales with your mana pool, is situated comfortably in the second tier of Cunning. This means that any build that has either 12 or 18 points in Cunning - which should be most mages' builds - has a good opportunity to pick up this mana regen without sacrificing too much.
Just wanted to throw this out here. If you desperately need mana regen, there is some available to you.