I think the optimism is sorely lacking in AbramsTrek because of several reasons. Most people have already touched on his deficiencies in storytelling, but I think there might be another reason that gets comparatively little attention.
We must remember that by the standards of today a lot of nerds would sneer at Gene Roddenberry for being an "SJW". Since Abrams has already thrown out the old nerds with his take on Khan, he cannot afford to rile up the very vocal minority that might take umbrage at Roddenberry's push for equality and inclusion.
It's speculation, and I don't afford it more credibility than mere possibility, but I do think it is possible that Abrams or someone in the studio marketing department might have been thinking on those lines, even if unconsciously.