I wonder what the comfort level would be like in a rough landing being so far left/right of the center of gravity if the plane was doing a lot of rolling corrections?
Designers could reduce the problem to an extent by building a double deck passenger compartment and putting the baggage compartments out toward the wings, rather than the current standard design which places passengers on the upper level and bags on the lower level. But there are limits to how well that can scale. I'm skeptical that we'll ever see flying wing or blended wing body designs used for airliners. Cargo and military applications are probably more realistic.
What if the seats far from the axis of rotation faced sideways instead of forward? People don't seem to be as affected by pitch changes as they are by roll changes, probably because we are get a lot of exposure to pitch changes whenever we drive in a hilly area.
A last row width of 25m is much wider than the 5m of a conventional aircraft, but much smaller than 70m.
Disclaimer: I work at the same research group at the Delft University
However, judging by the window placement, the passengers furthest aft are maybe twice as far from the center of rotation compared to a widebody? That's far better than any other flying wing/blended wing concepts I've seen to date.
[edit] Also the traditional place for first-class travellers will be no further than in a widebody aircraft, so the people for whom the airlines actually care about comfort will be unaffected.
It's entering an exiting the turn where you could have some greater effects. But again, so long as you use a slow roll rate, it shouldn't be too noticeable.