Comment by bigyabai

It might, but if you look at other AOSP features in that vein (split-screen multitasking, popout volume sliders, standard dialer app) they're all largely ignored by downstream OEM Android ROMs. I wish that wasn't the case, but it's also clear why this happens.

Google has led many horses to this spring, only to watch Samsung ship some godawful monstrosity and refuse to drink. It's part of Android's identity, not Google's.