[Samsung Galaxy Note 10+ Questions & Answers] AlaricBaltha:
Thanks for your replies.

So it is probably apparent that I have a few use cases in mind for my question.

For the example, I'm specifically referencing 4 devices: Note 10+, 17.3" Windows 10 Laptop, Xbox One S, and a "theoretical Future version of the Tab S".

1) I am a professional software developer and I hate working from a single monitor. My workstation drives 5 displays (counting my open laptop) and being without a mobile monitor means that I am always tethered to my workstation to do work. The portability of Galaxy devices doesn't really help me get work done atthe moment. It just makes it easier to "carry my stuff" endpoint to endpoint. I need a portable second monitor to be able to do work wherever I am and realistically, if the flagship devices were to become upgraded to support DP-Alt as a default feature, I could use DisplayPort's native daisy chaining feature to hypothetically drive multiple external displays. At the point I can cable my Note to two Tabs via DP-Alt and have 2 external displays, my Note (whatever future iteration would add support for this) would become my primary personal computer rather than my ultrabook. But the starting poijt towards that goal would be to upgrade the Tab for receiving DisplayPort-Alt input

2) I am building a vehicle and want to build in a couple of XBox Ones into the backseat for my children, but I don't want to install permanent, single purpose displays into the vehicle. The displays need to be portable. Miracast is far too slow for gaming (old, deprecated fallback casting protocol)

3) The screen on my Note 10+ is amazing, but when I'm wanting to watch a video in bed, I always find myself wanting a larger, higher quality screen. I will never permanently install a television in my bedroom, so I need this screen to be portable. (Miracast is ok for this because video is non-interactive)

4) I run multiple gaming systems directly on my phone and when I want to play a multiplayer SNES game, I really want to be able to display it on a screen large enough that we can both view comfortably. I don't want to run these games from a tablet. I just want to take advantage of its larger, higher quality display.

5) I carry my Note 10+ everywhere and sometimes I want to work with it on a larger screen but I don't want to carry my laptop with me. (Miracast is suboptimal. The delay is not terrible, but I want no delay)

Essentially, if the Tab can receive DisplayPort over USB-C (known by VESA as Display Port Alt-Mode) then it is immediately upgraded to be the only portable monitor on the market with a sAMOLED display, it could be natively treated by a DeX enabled smartphone as an external display (and therefore a Note would be able to natively DeX with a Tab), and a Windows laptop or Surface Pro would be able to treat it as an extended display so mobile productivity would more closely resemble a multi-monitor workstation setup.

Samsung does not currently have a product offering in the "portable usb-c monitor" market segment and -on some fairly extensive research- there are zero portable usb-c monitors available with an AMOLED display. The highest quality ones available are IPS and they are in the $300-400 range for non-touch and $400-500 range for touch enabled displays. But none of them have any ability to be used for anything other than as a dumb display.

If the Tab were extended with this capability, it immediately becomes the exact device that Samsung has been missing in the middle of its "Galaxy for Business" strategy and it becomes a perfect portable companion to Windows portable devices.

So, I'm very intrigued by any possibility for this to come in the near future.

I mean....*why not*? It seems to make so much sense to me as the killer feature that solidifies the Samsung+Microsoft partnership.