Obviously the dragon had to be CGI. But making ever Goblin into CGI? That's unnecessary. They could have used extras. And don't tell me they can't afford them, because this is a big-budget film guaranteed success.
Then don't add it in something called "The Hobbit." It would have been better to keep The Silmarrillion's works in another film so they could get more money. Notice how in LOTR the worst things are the things they left out? It's the opposite for The Hobbit.
I don't see that anywhere. All I see is unfinished CGI, unnecessary changes which helps the main plot of the book get lost in a pool of confusing plots. It's insulting to make an adaption of a book and change so many things. It's like saying the book wasn't good enough for a film and needed extra fluff. Honestly The Hobbit films would have been good if they made it into two films and kept it faithful. There's a lot of rich lore in The Hobbit alone.
Also, how do you explain Battle of the Five Armies? It was just a incredibly long action movie with all the dumb tropes and left Bilbo in the dust. In the book, Bilbo does some stuff, and the battle isn't even the main focus. Sure in the film they show what he does, but the main character is overshadowed by returning cast members, awful CGI, and overall just absolutely forgetting why it was a suitable climax.
Also, if you expect me to like the over-abundance of CGI in this film, you are mistaken. How am I supposed to enjoy a movie when everything looks half-baked? The goblins look awful, the CGI structures look bad, and some of the magic effects from Gandalf aren't very good. The only thing I liked was Smaug. Why? Because they put a ton of time and effort into him. Even when he breathes fire they add the detail of his belly glowing. That was neat.
Also, the colors in the film are so... Bland. It's honestly not very visually interesting. Hobbiton is the only place that looked good. Laketowne, the forest, The Lonely Mountain, all of them feature simply one color, and it's a bland one. Now you can say Mordor is grey too, and I'd honestly agree. I dislike how grey everything is in Return of the King. But Return of the King at least had different locations due to the books jumping around, which helps ease off the bland colors for a while and lets the eye enjoy the different surroundings. The Hobbit, due to it's pointless extending, stays in a place far too long, and the viewer gets bored of it.
Honestly, I can't think of much good in this movies. Many people say Martin Freeman does a good job as Bilbo, but I only partially agree. Freeman has tendency to over-act his awkwardness and it's very noticeable in these films. When he's not in awkward situations he does great.
Anyways, I'm done ranting now.