The only thing I wish that the Mac had that Windows 10 PCs currently have is a biometric authentication method such as a Touch ID sensor or Intel RealSense camera. This would fit right at home with the security angle Apple has been pushing in recent years.
And seeing as the Mac is about to get Siri soon enough, Cortana is a moot point anyway.
For me, not interested in Touch Screen, though maybe some are. Having options doesn't hurt me for those who do want it.
I'd rather see (and think it is coming with iOS X this summer) iOS get closer to a desktop class OS on iPads. That, iPad Pro (and if they release a smaller iPad Pro) are the Apple responses.
Siri likely will come to the Mac with Mac OS X 10.12
As for Biometric login? I use this. http://macid.co
Great app. Even can tap a pattern on my touchpad to unlock the screen