@owenmorgan07 - I too am after what you describe sir.
I have a Surface Pro 4 which has a Female Mini Displayport, I also have a USB-C hub which connects to a bunch of peripherals, a set up that works sweet for the wife and her work laptop but obviously not for my Surface.
Ideally I'm after a Surface Power Supply Connector, Male USB and Male Display port to female USB-C with pass through etc... But I also want Brexit to be cancelled and to win the lottery, so one out three would be lovely thanks!