Wouldn't it make more sense to display totals when pinging your health/mana instead of percentages?
It's great that a teammate can inform me that they are at 10% mana or health, example given, but whether that means 100, 200, 300 etc. can make quite a difference. One tells me it's low (or whatever), the other one let's me assume they can still use that many spells or survive that much more damage, or need a second and another to have enough mana to ult or something like that.
Just something that came to my mind, what do you think about it?