what about the recent leaks with iPad design taking ques from the 5 design?
I think a return the squared 4/5 style in a more polished design with the glass completely flush would be a massive hit but I just really loved that design the best over the curved sides/glass. The 5's glass still wasn't completely flush I was disappointed in that and I think the biggest flaw with the 4's was just that. The glass wasnt flush with the frame. I don't see why larger phones couldn't be designed with the flat edges with flush glass. I think it would be less prone to breaking too. The 6 and on design is too prone to breaking with the smaller frame and glass sticking out on all sides now.
Id be happy to see a return to that design
See the Oneplus X. It took the iPhone 4/5 design and made it better in every way. Bigger screen, less sharp edges.

Now imagine Apple taking that and adding a bezelless display. I would love to see that.
That said I am not sure if I like the idea of that design for an iPad. Surface Pro is a lot like that and it does not feel as comfortable to hold as the current iPad.