I've thought about this some more, and am wondering if they are looking at centralizing a Joe team in the United States for the next film... in the first one, the focus is overseas, with the Pit headquarters somewhere in the Middle East and so much of the action in Europe.
So, it's in the US, it would make sense to have other Joes taking the spotlight... maybe Zartan (POTUS) makes some sort of funding to Cobra secretly with a place known as Cobra Island, and Cobra Commander and Destro are released from prison and get there, or even broken out via the Dreadnoks or something... I don't know. But Dreaknoks in this one could be a lot of fun if they are some of the primary antagonists in the film...
Give us Flint, Lady Jaye, Roadblock, Gung Ho, Spirit, Snake Eyes, Duke and more realistic military designs, create some sort of blue Cobra troopers... have a cameo with General Hawk via a viewscreen or something so he has a role, and I think we could be in for a something good if the designs aren't too "out there" and the acting is better. Because we know the action is going to be good, and the script will probably be decent as the last one wasn't bad really; it just suffered from a few things that went overboard.
I don't mind a lot of the Joes being different characters now, but it HAS to have Duke and Snake Eyes... and I think that Cobra needs to have Cobra Commander and Destro. Baroness would be great, but if she's mentioned as being jailed up, and returns for Part 3, that could be okay. But please, no Serpentor... however, I do want to see Major Bludd. Maybe he can be a US General who defects to Cobra and is part of the buildup on Cobra Island... just my two cents.