I think Microsoft's commercials have the right idea for once. A pad with a magnetic (and perhaps inductive powered?) attachable and/or flippable keyboard (i.e. It's a pad when you want it to be and a notebook when you want it to be). I don't like Microsoft forcing the pad OS (i.e. Windows8) for notebook mode, but this is where the current OSX state of affairs could really shine (i.e. we have a normally useless launchpad in OSX that might actually (with a few tweaks to configure it better) be useful in a "pad" mode.
In other words, why can't Apple make a notebook that can also run iPad software and operate as a tablet as well as a notebook? There's all this push to make iPads more powerful yet a MBP that can run iPad software would be ideal for someone that wants an iPad and a MBP. Why should you have to buy two separate items when we know iOS software can already run in a developer simulation. Just make it another option in OSX. The two are then merged, yet separate (i.e. all OSX computers are also iOS software capable, but not all iOS devices are OSX software capable). Frankly, I said from day one that OSX should be able to run iOS apps. The fact that many popular iOS games cannot run on a Mac (no Mac version) is ridiculous, IMO. There's no technical reason a Mac couldn't run iOS software. It could all be easily recompiled for Intel processors the same way you got free PPC binaries at one time with little extra effort when Universal came out.
If nothing else, I could play Pinball Fantasies on my Mac at home with a real keyboard without having to dig out an Amiga emulator (since I already have it on my iPod Touch, but the touch interface is less than ideal, IMO and so is the screen size).
As for Netbooks, I think it's more of size/form factor than anything else at this point. Intel is getting lower powered all the time and an i3 CPU is already pretty reasonably priced. Why use a slow Atom when you could have an i3 instead and just use it in a smaller case/monitor package?