Do you think anything was rushed in the movie? I don't think there is 100 hours of story to tell or maybe you're talking about the whole series not just the first book? (and even then it's a lot)
Lord of the Rings was a dedicated labor of love and is IMO still the (set of) films ever made. The Hobbit was a cynical attempt to try and cash in on LotR's success and mindshare, but it was doomed to fail from the start for not having the same team and amount of creative control behind it.
In hindsight, I wish Peter Jackson was allowed to make The Hobbit first, then the LotR trilogy as we know it. The Hobbit could have been a film that never needed the huge budget it got in the end.