Why are there no targeting indicators for when an ally is trying to target you?

With Soraka's heal now being very short-range, it is VERY easy for an ally to get too far away from you (even with the Bananbulance). They get caught, they run AWAY from you, they die because they don't realize you want to heal them (which could've saved them), and then YOU GET BLAMED. Well, EXCUSE ME, Ezreal. I can't go over walls as Soraka or Janna!

This leads me to ask (AGAIN) why Riot has never even tried experimenting with allied-target indicators. They wouldn't be very hard to make, and would go a long way in terms of instantly telling your teammate "LET ME SAVE YOU!!!"

"Visual clutter?"

That's what the Options Menu is for. Players could turn it off if needed, but don't say you weren't warned when Lulu doesn't ult you because you ran AWAY from her in your panic.

"Use voice chat!"

In Normals? Who does that?

"Tell your teammates!"

Typing during a team fight. REALLY BRIGHT IDEA.