The thing I really like on iOS that android needs to do is iOS remembers the volume level on your Bluetooth devices. So in my car I need the volume full blast on my phone to get normal sound from my stereo, but ok my jaybirds I generally keep it at half volume and the iPhone remembers this. Can't tell you how many times I forget this on my Note and when I connect my jaybirds the music is at full blast in my ears.
And also the battery meter for the Bluetooth device is shown on iOS, nowhere to be found on android.
I think it's started doing it now for Nougat on my Samsung S7 Edge.
Actually, that may just be for my Gear S3 watch - since Nougat, it has a nice rich notification for it and an icon in the swipe down. But not for my Bluetooth headphones. It's getting better but at a snail's pace.