The only thing I like about iOS is the stacking notifications. So let's say 4 people on Instagram post pics, and I have post notifications turned on, I get 4 notifications that don't clear when I click one. With Android, I get one notification and if there was another Instagram notification, it goes away when I click on the one.
I'm using a Oneplus 2, so I'm OK rooting or using Xposed or flashing a custom ROM. I just can't seem to find anything that offers that ability.