Well, guys it looks like someone made "super screen" witch is basically a tablet docking device for iOS and Android and people are actually buying the idea.
Check it for yourself and share your opinion.
https://www.kickstarter.com/projects/brentmorgan/superscreen?ref=d2e3ui
Generally speaking, wireless is terrible for transmitting video. It's glitchy unreliable and high latency. You really need about usb 3 speeds ideally for video.
And the product itself, which is the size of a tablet IS AS EXPENSIVE AS A TABLET (Final retail price if you read is 299 USD. You can definitely get a sweet windows 10 tablet for that price, that also has miracast receive...lol)
lol! Basically what you'd be paying for is a tablet with no processor, and a glitchy slow display. You can do the exact same, with an actual windows tablet, brought for the same price or cheaper. My current 4gb windows tablet - 250 USD, a year ago. Every modern windows 10 tablet with a basic intel GPU can do miracast receive. You can probably pick such things up for as cheap as half the price of this nonsense device.
Fool's gold. A really really bad product.
There's a fold out portable projector screen via hdmi on kickstarer that is A MUCH better idea. And would work great for windows. It's about the size of a book when folder up. Would be dope with a windows on arm mobile. PC anywhere with less bag space than a tablet.