I traded in my iPad 3 for an iPad Air 2 and really couldn't be happier with it.
I'd love to see an iPad mini as thin as the Air 2, even if that meant a dramatic reduction in battery life. It would be the perfect device for reading (though probably not for text entry).
No outright iPhone is sold at a $99 price point. It's meaningless discussion 'on contract' pricing in a world where iPhone 6+ can already be purchased for zero upfront. Total cost of ownership is really the only thing that matters.