I was only commenting on the scheduler - not on the other points of your post.its simple logic, even if the scheduler works perfectly (i want to see ADP first), you really want someone to make a notebook SoC with Quad X2 + Quad A510?
Regarding your question, it is not clear to me what TDP you are aiming for, when talking about a notebook SoC...lets assume 15W for a moment (that would be a for slim notebook, but too much for a slim tablet) - then a Quad X2 + Quad A510 would be much too low power to even remotely touch 15W. For 15W they need to go at least 8x X2 + 4x A510 or more. For reference - with X2 + 3x A710 + 4x A510 they are most likely aiming at 3W TDP SoCs, like the next generation Exynos/Snapdragon. You are asking for a SoC, which has roughly 5x the thermal capacity.