What is the number one feature you'd like to see in Android?

Android has come a long, long way over the years. With every version it gets better, but there is always room for improvement, even for "small" or seemingly "unimportant" features that can aid our daily lives.

The only thing I'd like Android to include in the next version (or, now) and the thing I miss the most from my iPhone days is the "find my phone" feature. Google practically already gathers a lot of data about me (where I live, the places I visit etc), so I guess a feature to find your lost phone would be very easy to implement, technologicaly speaking

Sure, there are a lot of apps in the Play store that offer similar functionality, but none of them seems, well, sufficiently credible.

What's your number one?