I agree, the H VF is big and bright, which is, in my opinion, one reason that camera has been successful, even with its many ergonomic and operational issues of the earlier models. I always loved shooting them, despite the wrist breaking, muscle cramping heft of shooting all day with 55-110 in portrait, and the lock ups on the H1s.
The Canon 1ds3 and Nikon D3X have excellent viewfinders. I reach for the 1ds3 over the 5d or D800 for this reason alone. I'd prefer to us ethe Aptus 75s/RZ combo, but that system just takes so much more time to use, shoot, and the lighting required is an order of magnitude greater, that that it stays in the Peli case. The ds3 and d3x viewfinders could be better, of course. I really think that if Mamiya/Phase made a new DF with a LARGE bright finder on par with the H, the camera would be much better received.