I have to agree with you all that it is a really nice looking car but the lack of a hatchback option would seem to be an oversight on Mazda's part.
As an estate owner I am also slightly concerned that practicality the new estate has been compromised in the pursuit on aerodynamics/looks. Hopefully I am wrong but the the back end of the new car looks very low which would suggest that the rear access is limited, something which I find excellent on both 1st and 2nd generation 6's. If there was ever an example of a manufacturer getting this wrong it is on the Insignia estate, a good looking car in my opinion but utterly useless as an estate, the boot is just too narrow and low and with an enormous rear bumper to lift everything over as well, hopeless!