After the first quarter of next year, the novelty of the new mechanics will have worn off, and Frontier will need to repair the current FSS mechanism with something less user-hostile.
IMO Whomever lead the UI design (or acted as the primary design authority) for the FSS should probably be stripped naked and then ejected out of FD's airlock (without a space suit of course - no need to waste valuable resources).
Some may get my Sci-Fi paraphrasing in my slightly tongue in cheek statement above (kudos if you do), but I am serious about how bad I believe the FSS mechanics are. The benefits of the new system do not justify the sledgehammer implementation approach they have taken - the mechanics are pure faff.
I am personally hoping for FD to address the FSS gameplay issues (bugs are another matter) BEFORE release, though I suspect it wont happen before release if ever.
The mining aspect looks intriguing to me, not had the time to seriously look at it but from what I saw on the stream it looks pretty good overall - unlike exploration, it adds to and expands on the existing mechanics rather than throwing the baby out with the bath water.
Hand-crafted content by FD is not necessary, there is no way in this reality that the FSS can ever unify all aspects of the game - it was DOA IMO. There are some things that could be done to mitigate the objections of myself and at least some others but Hand-crafted content is not even close to being in the same universe - never mind the same ball pack. IMO hand-crafted content is only required to support FD's specific background universe story. It has no direct relevance to the FSS at all IMO.
Mission boards are not necessarily broken IMO/IME.
As for the multiplayer aspect - they would be ill-advised to focus too much on that aspect IMO - too many games have ruined overall gameplay by chasing the multi-player dragon.
As for atmospheric operations and space legs, no probably about it by my estimation - they will pretty much with absolute certainty be paid for DLC.
As for your ultimate conclusions, I disagree - I believe FD have made a huge miscalculation wrt their bets regarding the FSS mechanics though and in the long run I think it will most likely backfire on them.