This wasn't a bad series, thou about my most major complaints are:
1. The show fell back upon the giant super weapon thing and that is kind of triesome and it just appears out of nowhere
2. The supporting cast, they felt a lot like dead weight
3. The ending felt a bit rushed and seemed like they wanted to wrap things up rather quickly, when the story could of gone on longer, espeically without the whole super weapon thing
4. What happens to the Mobile Suits that use the gunformat, was completely breaking all established rules of the universe, but then what happened between the brothers last week was a sign of the writers saying "Screw the rules!"