I watched the whole Gamescom presentation live, but have only just got round to posting about it.
It was good of CR to say up front that the long demo was not representative of 3.0... no smoke and mirrors if it's right in front of us

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I was actually semi-enjoying the first run through the demo until the crash. I thought that the mobi-glass interface looked fairly clean and intuitive, even though it's silly to change clothes that way. I don't know if the Constellation cockpit just has a particularly nice cockpit (for SC), but visibility and clarity of controls when flying also seemed much improved over previous iterations. However alarm bells definitely started ringing on the second play through, were it made no sense to go through exactly the same steps again...
That face tech is quite a nice idea, and for once CIG seem to be doing something novel; a specialised web cam with more telephoto lens (more face information) and higher refresh rate would definitely make such tech a better experience, but as plenty of other people have pointed out, it benefits everyone BUT the user.
However, it does seem that development priorities are really strange... the flight model and audio were still abysma for example. It's like they got the "icing on the cake" saying mixed up with the "can't polish a turd" saying, and have been diligently icing a turd.
For someone as anti-social as me, there is a lot of potential for long periods of hollow, dragging missions. I see nothing wrong with going for slower and more meaningful missions than ED, but CIG will have to put a lot of work into making the spaces worth trudging through.
Science wise, it seemed like the asteroid and moon both had some sort of atmosphere, which is beyond daft