I've just been reading the production NEX lens thread with interest and dispair in equal measure. People seem to forget where Sony come from. They are a consumer electronics giant. I've said it before and I'll keep saying it, the first NEX offerings aren't aimed at enthusasts, there's just not enough of us to repay Sonys R&D investment. Once Sony have recoped that, they'll look to the neich markets. Therefore the first offerings will be price point driven, not quality driven. As long as the output is good enough for the target Market group, then all is well in the board room.
If you want pictorial perfection then you'll have a FF large format Hasselblad for serious work and a Leica M9 as a carry around. Of course most of us don't have that kind of money, so we make compromises that we find acceptable. At the moment, as enthusiasts, the NEX doesn't meet those standards, but to many who will be primarily driven by cost, the NEX iwill do so given price point.