Saw the GIJoe movie the weekend before last, and it wasn't too bad.
I was really disappointed that the two leading ladies weren't in it from the first movie (Baroness & Scarlet), as well as a lot of other major classic characters from the first one as well. (I looked up the cast before I went to see it, just to know who to look out for)

One thing I was surprised about, and kinda in a good way, was the writer following the original comic version of events relating to StormShadow's turn to Cobra, in that his Master was killed by Zartan, leading him to re-evaluate his loyalty to that evil organisation.
Usually I would be rather negative towards copying existing story elements, but after the first movie suggested that StormShadow was the murderer (and very evil himself), I was not expecting the second movie to twist it back around to copy the comic. I was so surprised, which is weird - being surprised to see something I should have been expecting. (and it was funnier that I was telling Christalcase while watching the first movie, all about the comic version of StormShadow and Zartan, and why SS was part of Cobra to start with, and why he then left)

If they make a third one, I really hope they bring back Destro, Dr Mindbender, Baroness and Scarlett... with emphasis on Scarlett & Snake-Eyes being a couple (it just didn't feel right seeing her getting cosy with that black guy in the first movie).
I'd also like to see more focus on the vehicles and gadgets in a third movie... which, I think would have to introduce Serpentor. Maybe the "classic" Cobra Civil War, with the GIJoe team having to contain the mess.
There's so much history there to draw from, to homage. (something that Bay could have done with Transformers more than a few names and objects homages)