Maybe I should clarify my intent.
Every keyboard I've owned, or gotten a chance to use (to include the Origin PC that I got my wife, which is a truly amazing machine) I have hated the keyboard and mouse for. So I find that when I use ANY laptop, I end up carrying a keyboard and mouse around with me, and the onboard I/O devices see not a damn bit of use.
So, it's a laptop that doesn't have a keyboard or mouse at all. It's intended to be a bit more stationary. A longer battery life if I can figure out how to swing that, probably a touch more heavy, and can hold it's own with the better gaming laptops in the world.
As others have said, there are a lot of options out there for slates/tablets with Windows and i5 processors with integrated Intel 4000 GPUs... I honestly think this is about the best you're going to get gaming-wise for several years to come. In building a "gaming tablet" (anything beyond angry birds, or whatever is the "in" tablet game these days), your main challenge is going to be 1) Battery life 2) Heat 3) portability. Several of the above mentioned tables with i5s only run 2-4 hours of reasonable use, which isn't terrible, but that will plummet for real gaming. Also, dedicated GPUs put out a lot of heat, and with a thin tablet-esque body, we're talking heat to the point you wouldn't want to/be able to pick it up. Even if you're talking about a kick-stand or such to hold it up, it would suck to try and put in a bag/carry when you were done with it. You would also need a thicker body to accommodate fans and airflow, and it would end up being the thickness of a book. Not in itself a dealbreaker, I suppose, but by the time you factor in the power adapter you'd have to carry because of the poor battery life, the thickness of the unit, and an external keyboard and mouse, I don't see this a being any more convenient or desirable than carrying a separate laptop and keyboard. That's a really interesting idea, though.
I'm definitely looking to lean away from the Tablet side, and emulate a laptop more, and with the thick body I have envisioned, and the shape of the legs supporting it, it wont be the easiest thing to transport, no. I envision the whole thing being slightly more bulky than a laptop, and a bit more inconvenient, but as I'm biased on the project, since it's my project, I don't really care. Once I'm out of the army, I'll be starting up college courses, and I'd like something I could take to college, take notes on, and bring home and game on. It's intended for longer stay use than most laptops, not really supposed to be as portable as a netbook or tablet, but it's not supposed to fill that purpose, that niche.
So, most everybody seems to be thing "What's the ****ing point, if I can already use a laptop"
Well, I don't know. I guess there isn't a point, I just hate laptop keyboard and pointers enough to spend all this time and energy removing them from the equation entirely. I feel like there should be another portable option. So it's not a laptop, it aint a tablet, and it's not a desktop, and it's not trying to fill any of these roles specifically, but could find a spot in most of them. If you're willing to lug the thing around.
I know this is a -very- niche project, and one I might be the very singular person interested in seeing it through, but I still think it's a worthwhile project, just to have something unique.