Hi,
Pricing is up to Hasselblad to decide, but Fuji is going to be around to keep them honest.
If you check Canon the 50 MP 5DsR is priced below the 30 MP 5DIV, so MP-s (mega pixels) can come free.
On the other hand, I would expect the next generation of MFD sensors by Sony would have on sensor PDAF (Phase Detection AF). That would work wonders for AF-speed.
Little doubt that Hasselblad will improve the X1D with firmware upgrades. The X1D is Hasselblad's first mirrorless design. Fuji has done mirrorless for quite a few years, so they have a lot of experience with the technology.
The basic difference between the two is the shutter. The GFX has focal plane shutter, thus allowing a lot of lens and adapter options, while X1D is limited to leaf shutter lenses.
Don't know about the X1D, but Fuji says their lenses are designed for 100 MP. I would guess that would apply to Hasselblad, too. First indications are pretty good.
So, my expectation is that next generation 44x33mm will have 100 MP, as indicated in Sony's roadmap and also PDAF.
It also seems that Sony has improved pixel designs in the last few years, with a significant increas in full well capacity and dual gain conversion. I would guess that all that is coming to next generation MFD.
But, 2018's camera cannot shoot today's moose...
Best regards
Erik
Sounds like a plan, but the X2D will likely have the next Gen Sony 100MP sensor and cost 50% more.