We've seen helicopters with C of G problems before, and they were solved by simply putting the battery on the tail boom (EC130). Maybe I'm just too naive, but how can a consolidaded manufacture, with money and brains available build a helicopter with a CG problem that cannot be fixed? C'mom, We are talking about millions of dollars at stake here.
And if we look deep into the problem, almost every light helicopter has a bit of CG problem, some when flying at max weight others when flying lightly loaded.
I agree that some advertised numbers may not be delivered, but for the price tag and category of the helicopter, it will be enough. And also an option for who is considering buying an R66.