The exterior design of the new Fit is very nice, much better than the previous one. I agree that the interior is where the Fit falls short, at least as far as aesthetics and comfort are concerned. The overall design, while amazingly functional, has too many elements that don't integrate very well IMO. The seats seem thinner and less well padded than the ones in my Versa, especially in back. That might be why Honda was able to engineer those remarkable folding tricks into them.
That's the trade-off. The second-row in the Stow'n'Go Caravan is the same way. Personally, as a potential Fit buyer, it doesn't bother me much: I'll be sitting up front most of the time.
And the magic seats are brilliant, and well worth the thinner cushions imo.
I thought the interior of the last-gen Fit was fine, but I haven't seen a new one in the flesh yet, so I'll reserve judgement until I do.