Agree with you mostly except music cause I do not have a lot of experience with that
My personal wish list
1) An everywhere dictionary like iOS. In fact, do one better, include pronunciations
2) An optimised browser that is as smooth as Safari on iOS
3) An optimised music player with consistent lock screen controls that can play music stored locally on the phone. It should also be a beautiful app - I am shallow that way
4) No skinning. All OEMs goodies should be packaged as apps
5) Introduce minimum hardware requirements for OEMs (like Microsoft)
Points 3 and 4: so that the platform at least has a semblance of consistency. Android has achieved its purpose...world domination. Now it can call the shots IMO
2016 is the year Google
Points two and three are more likely to be done by Samsung than Google proper.