If its really high quality AA filter (which for 10k should be) then it shouldnt be an issue. And anyway its not 18 mpix but 24 mpix (so resolution at worst case scenario should be pretty much same). CMOSIS isnt Kodak or Sony, so their sensors especially if they are co-developed with Leica might be actually quite reasonably priced so Leica could spend a lot more on CFA/AA and other stuff.
That DR sounds promising and 14 bit if used properly is great.
So far except price Im pretty optismitic about this camera. We will see I think.