[POLL] Which would you want on a support item: a mana regen aura, or a mana restore active?

Ever had moments where your team's Graves or Talon is mana-burning too much in mid/late game, and you want to mitigate that without Clarity (which sucks balls)? You used to be able to pick Soraka for that, but she lost her mana restore, so now NO ONE can help another Champion's mana depletion issues.

Prior to Patch 3.14, you could also purchase Mana Manipulator, which gave a weak but cheap mana regen aura. But it was removed because it made some lane comps obnoxious.

I've been suggesting that Riot either add on a mana regen aura onto an existing item or create a new item with said aura, but I'm also guessing that Riot would hate a new aura item because "no gameplay". As an alternative, I'm also thinking perhaps Riot could add a new item that, when activated, restores a target ally's mana by a suitable amount (probably a percentage of the target's maximum mana). That or they could add said active to Ardent Censer to make it a better buy.

Which would you like? An aura or an active?