I loved the movie but there are some liberties taken with the plot

Rating: 9/10 (9 June 2011)

While I have to say that overall I very much love this movie, there are a couple of small plot points that I have issue with, which can be explored in the form of a mystery.
The case of the mysterious vanishing characters #1. Where did all the other avatar drivers and their avatars go? When Jake is first taken to the link control center we hear the announcement "Drivers coming out of link." He rolls over and meets grace. In the background we see another driver coming out of a pod, but a strategically placed technician blocks their face, and the third driver is completely obscured. However, when Jake runs from the medical center after going online for the first time, he passes at least SIX other avatars on the base grounds playing basketball and whatnot. Later that night there are at least TEN other avatars in their sleeping facility. So who are these mysterious other drivers and where are their avatars when the big nasty goes down? Why doesn't Grace recruit some of them to her cause? Why don't any others go to Neytiri's tree and help out? Where are they during the big fights, or in fact, the entire rest of the movie because they are never shown again after they are introduced.
#2. What happened to Norm Spellman? His avatar gets killed at the end and we see human Norm emerging from his pod gasping in pain and shock, and then he vanishes. Jake Scully is supposed to be in the other pod, right there beside him, and Norm should be awake and watching the battle out the window when Jake's avatar and the general duke it out, but Norm has disappeared. The general reaches into the metal trailer and smashes the first pod and looks in  nope, empty, because that was Norm's pod and we saw him come out of it. Then he goes down to Jake's pod. Shouldn't Norm have been there somewhere to get Jake out of the pod and put an air mask on him? He's obviously not hiding under the bed, and he didn't go outside while Jake is in link and could use his assistance. He isn't in another pod in some other trailer either because we see that Trudy only carried one trailer and the 2 pods inside to the Navi' refugee site, and it clearly shows only one trailer in several scenes.
Obviously these disappearances were done in order to make the plot more dramatic. It's much more dramatic if Neytiri rescues human Jake and puts the air mask on him, instead of Norm. And we can't have all these other avatars running around the movie distracting from the story of Jake Sully. Its easy to overlook because of all the action in the movie, but once you know to look for it, it's very noticeable.