This is a hard choice!! .....Ok

1) 6a
Because you have the most amount of keys available at all times but I'd want those hinges to be solid! solid! They'd have to be made out of liquid metal and brag about it in the owners manual.
http://www.liquidmetal.com/
Samsung is using it, why not Nokia?
And I'd want that screen in portrait mode locked down nice and good and solid with some kind of cushion on the hinge (springs and maybe magnets too) when I flip it over in that portrait mode. I don't want to feel like it is going to fall apart which is what the picture kind of makes it look like (screen is too thick). Maybe make the whole screen housing and hinge out of liquid metal then you're never gonna break it unless you take a blow torch to it.

2) 8a
Because WTF are those swivel plates??? Those could be all kinds of things!
They could be solar panels from nanosolar.com
The right one could be a handwriting/mouse pad so you could just sit there and make your way around the whole OS using the right pad if you are right handed and then the left pad could be for finger print recognition or inductive charging (drop the inductive charger onto it) or their ambient EM harvesting or it can be an additional antennae for wimax or LTE. Possibilities hmmmmm.

If they could take figure 1, remove one of the keys, space it out a little more, implement what previous poster said about dpad like function on those keys and add a little slide out underneath optical horizontal mouse like they have on the current E72 but about 2 inches long with a few more functional keys filling in the rest of the space on the left of the slide out i.e., you would have on the left (going left to right) function,control,shift,space,delete,backspace,ente r,shift, optical mouse.
That would be a total f'n rewrite of a keyboard. Noone would see that coming.