What wasn't said: 1.) What Gandalf hoped to gain by getting rid of Smaug. Some suggest that he didn't want Smaug to ally with Sauron, but that theory seems unlikely. Sauron was known as the Necromancer, and I don't think Gandalf outright suspected the Necromancer of being Sauron. I know in the movies he at first didn't, and I'm not sure he did in the books either. If he had, I think he would have told Saruman to go fly a kite when suggesting that they not do something about the Necromancer sooner. If Gandalf thought the Necromaner was just a local, albeit very dangerous, bully in the Mirkwood/Lorien region, he wouldn't have been as eager to attack Dol Guldor as he would have if he KNEW it was Sauron. 2.) What the dwarves's plan of dealing with Smaug was. The Desolation of Smaug movie had a lot of plot issues that varies from the book, the worst of them being the character of Tuariel and Bombur in the bouncing barrel. However, their fight with Smaug near the climax of the second movie actually DOES make sense. I mean, how are you going to get the treasure if you don't take out Smaug? Even if Bilbo could take the treasure, as he himself says, it would take over a century to carry everything up even if there were no dragon. 3.) Gandalf seems to have not thought that the dwarves's plan could BACKFIRE, as it very nearly did. It nearly got them stuck in the mountain and it was only Bard who stopped Smaug from wiping out Laketown fully. He says that heroes are in far away places and are too busy fighting each other. Yet, a hero is what ends up defeating Smaug in the end. 4.) How was Gandalf planning to stop a repeat of the Battle of the Thousand Caves? It looks like there was going to be another dwarf vs. elf fight, which, if it had gone on, would likely have soured dwarf/elf relationships enough to alter the timeline of the Lord of the Rings to cause the West to lose the War of the Ring. Gandalf does know about the goblins coming, but, from what he said, it appeared he expected them to come LATER on. So what was his plan to stop a dwarf/elf war? If he had one, why did he want to wait till the last possible moment before springing it? 5.) Why didn't Bard honor Thorin's request to have the Elf King depart? He could have simply used whatever payment Thorin gave him to repay the Elf King for his help. Bard seems like a level-headed enough guy that I'm surprised he didn't think of this.