You want disappointment? I had been using (professionally) Leicaflex SL2 mot's in the 1970's, Leica had contacted me about whether I could see the the 'auto exposure feature' as an advantage. "Of course," it had potential in faster moving situations. BUT, when Leica presented the next camera, it was the R3mot? What the ???? Yes, it had AE, but there was NO comparison or 'camera genealogy' to the vastly superior ergonomics of the SL2. Talk about disappointment! YIKES!!!
Well, the R3mot was a 'step-down' but the metering was better - though that was about it. I grew to accept it - but for Leica, well they were basically on a 'flat slope'to no-where. It was the beginning of Leica's frustrating 'steady-state'.
So, the Fuji GFX, I like it, I also like the Hasselblad XD1. But I have to admit, you're design comment comes across as a little weak. Visual appearance aside - yes, it's a 'bit hefty in the middle' but overall, the design 'usability' seems reasonable. Certainly I don't see any cost-cutting in the design, but the yes, the Hasselblad is 'cleaner'. So is the cost.
My old favorite 35mm camera design of old, the SL2 mot was a costly beast to build, and it seems likely that the XD1 is also. As to the most important issue; ultimately, how do they record images? I'm just going to guess that the Fuji will do an excellent job, as good as the XD1.
By the way, I do prefer a 'clean design' and the XD1 reminds me of my 2nd favorite camera from the past, my SWC. Oh, by the way, the Leica M6ttl was my least favorite M model, the M4 and the superior usability of the M5 were better. But I'll be leaning towards the Fuji GFX over the XD1, it won't be about the money as much as the trust I place in the company - Hasselblad is still in 'recovery mode'.