I actually found it optimistic, in the "destroy a village to save it"[1] sense. HN, as it currently stands, will cease to exist. I suspect the volume of submissions pointing directly to old wikipedia articles will dry up. I consider this a good thing.
I suspect the volume of submissions that are reposts piling onto something already on the front page (Erlang, Erlang, Erlang, Erlang, Haskell, Haskell, Haskell, Go, Go, Go, Snowden, Snowden, NSA, Erlang, Lisp, Lisp, Lisp, Lisp-flavored Erlang, NSA, Erlang, Erlang, Bacon and Spam, Javascript, Framework, Framework, NSA, Erlang, Haskell, Haskell, Erlang, Lisp, 2048, will dry up. I consider this a good thing.
I suspect I will spend less time on the site, either because conversations will become static expressions of views or because I won't have to filter through as much content, even though much of which marginalia I find quite engrossing. I consider this a good thing.
What comes next is open to conjecture. It could be a more mature salon full of reasoned discussions or it could become a ghost town with lots of great, old, discussions.
[1] I know, apocryphal at best.