Wow, that is a long and critical post. I agree with most of these points and hope that the mobile version (it is not an app, just an alternative stylesheet for the browser, as far as I know) is done soon. It has been WAY too long. I expect many small changes afterwards in all directions and not that they start the next monster project that needs ALL their resources.
My focus is on SPT, which has seen absolutely no love from the game so far. So we are working on our own solutions to change that.