"a tablet of the highest quality"
"quad-core Tegra 3 processor is out"
"target price has been lowered to $149"
It seems to me that you can have one or the other. You can make a solid $149 tablet with many compromises. Or you can make a tablet that has top (ipad) quality hardware. You can't really do both without shoveling money into the toilet.
Indeed Asus already makes a tablet with top quality hardware. It sells for $499.