Funny, I actually naturally put my Jolla C upside down in my pocket all the time because I find it more convenient to reach it and then twist the wrist to look at the screen, except when I have to keep it up because of jack/earplugs, and in that case I find it less convenient. Chen's device will be perfect for me in that regard, always upside down in the pocket.

But in any case, I agree with you, patches to allow full rotation cannot hurt and they give flexibility to users with different preferences.

I think the hardware shutter button should not be a problem if the phone comes with Sailfish. We can already use volume key as shutter release on the Jolla phones, and this phone will inevitably have volume keys as well. Admittedly, volume keys are not ideally located on the phone since they tend to be on the top left when the phone is held in landscape mode, but this is still a good compromise if adding another button is too difficult.

The camera itself is not an selling point for me, it will not rival the cameras or lenses I use when I really want to take photos which means I will always feel frustrated even with the best phone camera if I only have this at hand when I really want to take pictures. Usually bad image quality is fine for me as I use phones just for souvenirs and actually high resolution would just eat SD card space for no real benefit in my case (therefore I agree on the low pixel count on a bigger sensor), but of course I can't tell better camera would hurt, as long as it does not increase the price tag too much. I also understand that it can be a significant marketing argument, not only for people who don't own other cameras but also for photographers who don't always carry their professional camera with them, and it has proven rewarding for previous "camera-phones" on the market. As you mentioned, it really depends on how much it impacts the final device price.