Isn't it weird that Surface Book which is tablet with performance base has discrete GPU and device, that's real latop has't? With lates 10-series of Nvidia GPUs I believe there are cards which could fot in it's body.
Not sure I'd class the book as a tablet. It seems like its hardware is in the base, rather than behind the screen.
I'd like to see a mini surface with dedicated graphics and telephony. Would be boss for both MR and AI/calling/mobility pc. A jack of all trades.