Two comments:
1. I found the ending of the Klingon War incredibly easy and lame. The Klingons are within minutes of attacking Earth, with their foot on the neck of the the Federation, and then "oh, never mind." That's about the most un-Klingon thing I've ever seen. And L'Rell threatening to blow up THE KLINGON HOME PLANET in order to unify the Klingons? Really? If a human threatened to destroy the Earth unless they were declared President of the Federation, I think we would look pretty unkindly upon that person.
(1.a. Klingons are so into species purity that they allow the Orions to have their own community on Qo'nos? And humans can walk around on Qo'nos and its not a big deal? If there were Klingons walking around on Earth I think that would be an immediate call to security forces, and the Federation is much more "species inclusive.")
2. From the beginning I never really felt like this was Star Trek. I can't even tell you specifically why, it just doesn't fit for me. This really solidified for me at the end, when the Enterprise appeared, I just had this overwhelming feeling of "that doesn't belong here." Not because of design change or whatever, but just a mismatch in my mind, the same as if [pick a random ship from another sci-fi show] had appeared.