Remember the reason why mana pots were removed?

Mana potions were impossible to balance because mana was subjective to every champion.

For someone with a low mana pool, mana pots were OP and made mana meaningless For someone with a high mana pool, they never got the amount of mana needed.

Wouldn't the same be said for the new direction of Mana items?

Just giving straight up mana "as many of these items now do" is still REALLY good for those with low mana pools because their mana costs are balanced around having a low mana pool.

Not to mention, this doesn't even help AP mages in the slightest.

This is just an overall nerf. I'm glad new items are being introduced, but these items are just going to make certain picks that are already strong just a lot better overall, while maybe bringing a few new faces into the spotlight.