I have an iPad mini 2 and have huge jealousy for the Air 2. A7 iPads are so stuttery with everything and refresh so much. Also miss Touch ID from my iPhone 6.
I have no stutter issues and have yet to have Touch ID, so for me it's "meh". I look forward to having Touch ID on my next phone (especially when Apple Pay comes to Canada), but my iPad rarely leaves the house, so security is less an issue. And I don't see me lugging an iPad around to pay for stuff.