Kinda unrelated, but with all this amazing efficiency, I wish Apple would re-introduce the one feature that made me truely love my old MacBook. On my ~2010 Mac

Kinda unrelated, but with all this amazing efficiency, I wish Apple would re-introduce the one feature that made me truely love my old MacBook. On my ~2010 Macbook Pro they had a series of small green lights on the chassis that acted as a battery indicator. When the laptop went to sleep, it would take on a slow breathing like animation effect. It was beautifully done. I was sad when it was removed. Please bring this back.