I know I've said this already, but in light of all the negativity I want to say that I have faith that the finished Smach Z will be good. Most concerns are about heat/throttling, or battery life. Valid concerns, indeed. Smach Team has a lot of industry help (I believe AMD said they'd be assisting wherever they can) and they have some good, experienced designers. They have said that active cooling will be used if they've overestimated the new heat sink. If they use the right high quality batteries, they should be able to deliver the battery life promised - my 4 year old Origin Eon11-s uses much higher drain components and it still delivers 4-5 hours of gaming with a 5400mah battery.
The Smach Z will either do well, or the company will fail. They can't afford to not deliver!
I am truly looking forward to seeing it develop!