The whole 'Continuity' concept is just brilliantly useful. I can see myself using that a lot!
Me, too. I frequently go back and forth between my Mac and iPhone during the day, and this will make it much more seamless. The ability to answer calls on my Mac will also help. I sometimes miss calls when I'm upstairs in my office and my iPhone is charging downstairs.
Overall, I'm much more excited about the changes in iOS 8 than I was about iOS 7 last year. And that doesn't even take into account all the improvements that developers will be able to implement thanks to extensions and other changes.
As an end user, I don't much care whether a particular feature was available on Android or another mobile OS before iOS. I just want to see Apple implement it in a way that makes my life easier or more productive.