Let's just say, for the sake of argument, that the next-generation iPad mini ships without a Retina display. Let's just say, for the sake of argument, the same factors that prevented the original version from having a Retina display - it would have made it thicker and heavier, or compromised battery life - haven't really changed. What else, then, would you like to see in the iPad mini 2?
The iPad 4 now has a 128GB storage option. Would you want that amount of space on the iPad mini? The iPhone 5 has not only a faster Apple A6 processor than the iPad mini's A5, but a much better 8mp iSight camera to the mini's 5mp shooter Would you like either of those moved over? The iPod touch comes in a far greater selection of colors than the monochromatic iPad mini. Would you like to see the mini spruced up with red, blue, and yellow? How about rumored, next generation technologies like new sensors or fingerprint readers? Do either of those appeal to you?