ios 8 = ios 7 + health stuff and some minor stuff which android, wp , BB have enjoyed since atleast 2 years but were waiting for apple to invent the new features and be called revolutionary
i dont see any reason why ios 8 is even called the next version of ios, it doesnt have any new features as such and might as well have been an updated ios 7.1.x or something instead of 8
every other mobile os gets major changes every update(wp,android,BB10 and even the aging and old- BBos and symbian)
ios on the other hand has gone the other way after ios 7, design is kiddish and unoriginal-they should have given an option of themes and fonts instead , even wp has more customisation in that aspect(dark and white background,wallpaper,colour schemes etc)
ios is a great os no doubt,dont get me wrong, but ios 7 and 8 are real letdowns for an apple lover like me, i love my idevices but only one of my ipads is on ,7 others are jailbroken on 6.1.3 and 6.1.2
wp8.1 has already gotten soo much criticism and hate for a few things despite bringing alot of new things to the table if not late but ios 8 ,despite not getting any major updates is still not scrutinized
ps- taking calls with a mac etc have been inbuilt-features for windows and windows phone as well, just try pairing wp8.1 to windows 8/8.1 and see, you can even make calls etc from there