Oh dear, oh dear. I'm glad I didn't wait for non-reference Vega. £590 is competitive in that it competes with Nvidia at that price point, but it does so 16 months too late and with a much higher TDP. That would be grand if it actually matched a 1080Ti, but it doesn't.
Make Vega 64 at 200W GPU with all other factors considered = I'll buy one
Make Vega a £400-480 GPU with all other factors considered = I'll buy one
Make Vega on par or close to the 1080Ti consistently with all other factors considered = I'll buy one
Make Vega happen 10 months ago with all other factors considered = I'll buy one
AMD, you delivered none of those things. It has the TDP of a 1080Ti (higher in fact), but not the performance. It has the price of the 1080, but not the availability or TDP. If I were only buying one GPU for the next 3-4 years I'd probably buy a Vega 56 or 64, but that's not me.