Would you buy the next iPhone if it looked like this?

Ever the rumor mongers, the fellows at DotDosh have posted a sweet-looking (clearly unofficial) concept mock-up of Apple's next iPhone in an attempt to answer the question, "What direction should Apple head in next?"

"Apple iPhone Pro," anyone?

Really, though, it's a good point. Many people have pointed out the shortcomings of the iPhone software, to be fixed with the iPhone 3.0 update. But what about the hardware?

iPhone 3G users out there: what needs improvement?

And for that matter, what the heck will you name it? (Certainly not 4G.)

In my opinion, this could be a great milestone for the iPhone -- where it becomes a family of products, rather than a single product. Many have speculated on an iPhone mini -- but what if that's the wrong road? What about differentiating iPhone models?

ZDNet editor-in-chief Larry Dignan had three models to suggest in response: the basic iPhone, no radical changes; a model with a keyboard (which I would call "Pro") for those wooed by the T-Mobile G1 and BlackBerrys; and a model with a joystick-type input, for those who prioritize mobile gaming.

Gizmodo's Jesus Diaz thinks it will look like this: "A flatter, even more tapered and slender version of the current one. After all, if you have a winning formula, why radically change it?"

Which brings up a good point. If you have such an iconic looking phone, how do you evolve?

Apple tends to design with "iconic" in mind, and it generally evolves -- rather than reinvents -- once it's hit an iconic design. So how would you change it, short of trimming thinness and weight?

What do you think?