I think it looks to have great potential at that price point, as long as you can adjust shutter speed, aperture and ISO quickly and easily then whats not to like about a 50mp mf camera that is compact. I don't have really big hands but if it's the size of an A7 then it wouldn't work for me, I need a bigger feel although that's entirely personal. As for all the rest of the gubbins, I am sure it will have lots of technology but you don't have to use it, it needs image quality and ease of use. As with all cameras, in the hands of someone competent I am sure it will produce beautiful images, but no amount of tech or new design will polish a turd as they say!
It's not for me I am positive but I think they could be on to a real winner with this, because of the short flange distance, I'd love to see some tilt/shift adapters to the H lenses, or a mount for some of the Arca/Cambo kits for those interested in movements.
Good luck to them!
Mat