Change in the display of bars associated with resources (mana, energy, rage, etc.)

I have long had an idea to write but all did not reach the hands

Why do not the developers add to the bar under health /for the separation of resources like mana, energy, rage, and so on, so that it's much more approving to monitor their resources, against heroes like Ryzze, Anivia that have a 2500+ mana pool in a late game often do not understand how many more mana left and the separation of the shield of Mordekaiser or Yasuo into cubes of 100 It would be cool