The marketed advantage is 4k and HDR. Who exactly goes for that then? The PS4 Slim can and would likely have the same marketing. You say this like sony have marketed what the PS4 Slim can do. Secondly memento mentioned that they both be announced so there is no springing a surprise. What memento is suggesting is exactly the same. You can decide.
Basically nobody if they already own the XB1. Sure, some may pick one up anyway, because they want a cheap UHD BluRay player, or they're just the sort that typically buys console revisions... but the XB1S is
not being sold as any kind of XB1.5. Any performance differences between it and the original console are effectively invisible, and the average person will never even know they are there. Sony couldn't position the Neo in a similar fashion without lowballing the machine so badly that you'd have to question it existence. They would also have to be willing to sell the console at a price that replaces the original console entirely... something they've pretty clearly stated they're not doing.
I don't see anywhere in Memento's post where he says anything about announcing the more powerful console alongside the Neo. He simply says release the Neo as previously planned, and then Holiday 2017, release the new super PS4. If they were going to offer a machine like that, then yes, making sure it's announced before I go buying a Neo would be very, very important... else I'll be
pissed. Either way though, I have an unfavourable choice to make in this scenario. Run the next year with a PS4 less than half the power of others, or buy a Neo (alongside the PSVR I have on order) with the full knowledge that it's a stopgap for one year. The XB1S is simple situation... ignore it and pick up a Scorpio next year. I know the Scorpio is on the way, and I know that for all intents and purposes, my current XB1 is functionally identical to the slim revision. I'm not going to feel that way about a Neo regardless of if there's another console following it or not. It's more than double the performance of the PS4 I currently own, and is having a separate performance profile mandated for future software.
There are often small things that differentiate a new revision of a console from the prior version. The HDMI port on the 360 (and consequently its ability to output 1080p) is an example. Being on a whole different performance spectrum isn't typically one of them, and that'll push people to upgrade that wouldn't typically purchase a slim model for the same reasons. Doing that twice in the span of a year... not a good look.
As I said though, Sony would reveal both consoles at the PlayStation Meeting on Setempber.
Ah. missed that post. The rest of the above remains an issue though.