I didn't mind him trying to make the Hobbit part of the LOTR cycle. it wasn't originally written that way, but as the other reply stated, Tolkien wanted to do that too. in fact, some of the dialogue changes he made when the book was re-released DID change certain things to make the Hobbit fit better with the later books. And I guess he pulled in some of the pieces of The Quest of Erebor and the Similarrion (sp?) to try to tie things together. But really, the main difference is that The Hobbit was written as a children's story for children. The Lord of the Rings was written for young adults. since these movies are produced in reverse, they want the LOTR audience to enjoy the Hobbit, and adjusted accordingly.