The iPad Air isn't visionary, but it's a strong update. That's good enough for me.
I've been using the Air for the last 24 hours and it does pretty much everything Apple promised: it's faster than the iPad 4 (which I traded in at Verizon), thinner, lighter, better looking, and appears to have equal or better battery life.
That's a tall order considering the challenges of packing a power-hungry 9.7-inch Retina (2,048x1,536) display into a one-pound, 7.5mm-thick package. (And one of the reasons that the iPad Mini Retina is delayed, as the Mini is much smaller but with the same, demanding high-resolution Retina screen.)