I believe it was @raiyan who said that something is good exactly because it can induce a reaction in you. If it were bad, it would leave you with nothing but indifference.
But I guess the key thing (heh) is that one shouldn’t go into a Key work with expectations in mind. I had that mindset while reading Rewrite and that made me pretty angry after I finished it. And that, I think, is something else to take away from this story, at the least.
Key doesn’t have a “magic formula”. It does what it does, and they can’t be expected to do the same thing all the time. I guess it just has that notion because its more popular works (Clannad, LB, AB!) have the same formula, whereas the more unique works don’t turn up so popular.
I guess this is why I like Key now, because I get a certain type of variety when reading their works. They still haven’t gotten to the variety I am looking for that will make me consider one of their works above the rest, but I enjoyed every single one of the works that they have released.