#16 Poor Attempts at Juxtaposition
Hal and the Earth based baddie Hector both interact with the same alien, but their fates are extremely different. At two separate points, the film makes it a point to cross cut between them. But, we dont find out that Hal and Hector know each other until after this, so it falls flat. If anything, it interrupts the forward motion of Hals story.
#17 Hals First Show of Force
The first use of the ring is putting people whose jobs he jeopardized in the hospital. Tony Starks first use of Iron Man was punishing terrorists and trying to save his friends life. Hal punched someone through a brick wall. That probably shattered the guys spine and cause extreme internal bleeding. Id venture to say that he may have killed at least one of them. That was the first thing he ever did with the ring. Very wise and heroic.
#18 Sinestros Strike Force
The Green Lantern Corps is made up of 3600 officers, but Sinestro confronts Parallax with a handful of them. Why? The film makers needed to show how strong Parallax is by easily disposing of multiple Lanterns? Of course not! Its because...um...hmmm. Ill get back to you on that one.
#19 The Costume Special Effects
When the first trailer was released, a lot of people said the costume looked stupid. The filmmakers defended themselves by saying the special effects were not finished, but Im pretty sure that was a lie. Why release the footage if it wasnt complete? So, since theyd been made fun of and were SCARED, they poured a whole lot more money into the CGI and made a bunch of superfluous additions to the costumes. Do they need to be pulsating with light at all times? Do we need to see little lightning bolts in Hals mask? Of course not. It doesnt add anything of value to the movie. In fact, its distracting.
#20 Ring Buzzing
When danger is present, a Green Lantern ring will start flashing and vibrating. In the comics, GL rings can speak to their wearers, informing them exactly of what is approaching. The way its presented in the movie is the least effective method of warning someone. Its pretty much the reason Abin Sur dies. His ring goes crazy, but he doesnt know where Parallax is going to attack him from, so he ends up taking it right to the chest.