That was a part of why the Hobbit got screwed.
They were working with Guillermo Del Toro for like two years but didn’t get funding, so Guillermo left. Then Jackson started spinning up the project and got seriously sick, which left the crew to only able to keep practicing fancy camera angles and CGI stuff.
I was mad about the orcs, but in the hobbit it does describe that orcs and goblins are interchangeable, orc is the hobbit word for goblin. Agog is in the book, but dead for two generations, so I don’t know why they didn’t just keep it to Bolg as the nemesis.
The elf romance is unforgivable.
Thor being curt and overly direct is wrong, in the book he speaks for hours without saying anything. Except after he finds Bilbo took the arkenstone, then he’s pretty directly a dick.
Gandalf dealing with the necromancer really isn’t something for the movie either, as it’s the Hobbit. That would be fine in the silmarilion though. Technically it is in the hobbit but only in passing, as Gandalf tells the elves about it but doesn’t really talk to Bilbo directly.