I realise it's around £300 cheaper than the XPro-1 was at UK launch. Irrespective of that and the development you mention compared to a Nikon D7200 at around £800 the XPRO-2 is way overpriced. Or if you like Nikon are turning out top stuff like the D7200 way cheaper than Fuji can compete with.
I'm not anti Fuji as l have XPro-1 and XM-1 and am very happy with both and am keeping and regularly using them. They give me great results. All that said the 2 is still way overpriced in the UK.
As others have said, the market decides whether the price is right; if the X-Pro2 sells then it's not overpriced, and I suspect it is selling. Don't get me wrong, I'd like it to be a lot cheaper too and I will not be touching it at launch or a long time after, but that doesn't mean Fuji can't or won't sell it to plenty of others in the meantime.
D7200, nice for what it is I'm sure but a very different camera and I'm not sure Fuji are trying to compete with it.