It feels so god damn horrible recalling as Nasus with 80% hp because you went OOM and now you're just sitting in fountain with full hp just waiting for your mana juice to refill.

Just make it so that when your hp is fully restored so is your mana...

Why must mana users have to deal with such unnecessary nonsense?

Edit 1:

1. We already have 25 champions that recall and only wait for their HP to regen.
2. Instantly restoring your Mana because you backed with 100% HP won't break the game or give an unfair advantage because you still have sacrifice time, to recall and get back to lane by either walking, using summoner spell TP or using your Ult, which is again something manaless champs don't even have to think about.
3. This nothing more than a quality of life improvement for mana users.

Edit 2 :

1. Since my title and post are still somehow being misunderstood in the comments, i will attempt to explain as simply as humanly possible:

I want Riot to make it so that when you are in your fountain and are regenerating your HP and mana, the moment your HP is restored to 100%. so is your mana.

I do not want mana users to waste time sitting at the edge of the fountain with full hp waiting for their mana to regenerate.

THAT'S LITERALLY ALL THERE IS TO IT.