I think innovation is cool. Just because I may not want it (but I do) doesn't mean it shouldn't be done. I always curious why so many individuals complain that some new product is unnecessary, unneeded, silly, useless, etc before ever even giving it a try. Kind of reminds me of when Pentax and Nikon introduced autofocus slr cameras. People wondered why they were necessary, everyone was perfectly happy manually focusing.
Speaking only for myself, I love the new app. I can now upload smart previews to the cloud from my laptop and desktop and later I can access them from my iPad. While I realize some don't want to ever pay a subscription model for anything, I accept that I already own several items that are subscription model (alarm system, cell phones, my house, etc) and they all cost far more that 10 dollars a month. For those who have no problem with this, its a great deal.
These look like great additions and maybe I'm in the minority but I am enjoying the Photoshop CC.
This is very similar to focal reducers used on telescopes to make it easier for astrophotography. Very common and been around a long time.
Here, I think the articulated screen can really be taken advantage of by removing the mirror diagonal from a short refractor and simply tilting the screen up and manual focusing at 10X.