I liked the old Android emoji much more and was disappointed that they lost the race for becoming the standard. It used to be possible to express the emotion of being content that is not exaggerated by showing teeth or blushing [1], and "weary face" could be used to humorously express exhaustion [2] while it now seems to stand for "my house burned down" [3] (I especially miss "weary cat face" [4]). The Apple emoji look like they were designed for people with emotional agnosia.
I guess one could argue that emojis are supposed to express the essence of an emotion to the fullest extent, but just like with color pigments it is nice to have dilutions.
(At least they got rid of that awful, awful grinning emoji [5].)
[1] https://emojipedia.org/google/android-4.4/smiling-face-with-...
[2] https://emojipedia.org/google/android-4.4/weary-face/
[3] https://emojipedia.org/apple/ios-11.2/weary-face/
[4] https://emojipedia.org/google/android-4.4/weary-cat-face/
[5] https://assets.change.org/photos/2/by/dr/IcbYdrlxwuCPHHJ-800...