In one corner, we have iPhone and iPod Touch with OS X, but with limited functionality due to limited processor and touch display, which is due to limited pocketable size.
In the other corner, we have Mac laptops with Leopard, which requires a "hefty" processor and keyboard/mouse to drive its functionality. ("hefty" only in relation to the ARM-based embedded processors.)
What types of touch-screen devices make sense in-between these two? Coming from the iPhone corner, if a device is no longer pocketable so that there could be a larger (5-9")display, but still light (9 to 14 ounces) and thin, what would we want to use it for beyond that available in iPhone/iPod Touch? Web surfing would be easier. Data input would be easier. Document viewing and editing would be easier. Movie-watching would be nicer. But what else would make a large market want this instead of iPod touch?
Coming from the Mac corner, how much can we take away from a Mac laptop and still call it a "Mac"? How much Mac capability are we willing to trade-off to get a lighter and thinner Mac? Does a Mac by definition need to run Leopard? If so, then it needs a well-powered Intel chip, which drives battery. Note that Jobs poo-pooed touch interfaces for the Mac, so then a Mac needs a keyboard/pad (speech input is still not here!). Does it need more than 64GB storage? That would require a HDD if it was released within a year which would drive battery.
Thoughts? Apple just might be listening.