G-Reco is pretty interesting when you start breaking it apart. It's a journey for it's protagonists to understand the world around them and why this war is breaking out. They go from location to location in order to figure this out for themselves rather than just following what some leader tells them. In the end, each side has it's understandable reasons for going to war but also actions that make them hypocritical or naive about the subject. Mask for instance goes on about the racism he suffers, but only views Bellri based on his lineage. When he only thought of Bellri as the director's son, he was accused of trying to get buddy-buddy for his own gain but when he found out Bellri's real parentage Mask transforms him into his ideal villain.
It really smacks relevant to me with how people keep resorting to safe spaces or cries of fake news/media bias when confronted with information contrary to their beliefs. As Gen Urobuchi put it (he's a fan, saying it made him genki), it's a story about the danger of stories and the protagonists are strong because they resist the stories of others.In the end, it's a show about being open to the voices of others, as well as going out to see the world.
IBO actually tackled this in the opposite direction, giving us a story about the dangers of stories from within a bubble. Everything in it worked to make Tekkadan look like the good guys making the right calls, only to end up regarded as the villains. It never really challenges the on the actions they take, instead making us understand why they did them. It's only when, again, you start breaking down what happened (and a rewatch afterwards helps), that you can see where things started to go wrong. Shino's death, for instance, acts as a foil to his attitude in episode 5.
Plus, if you're familiar with real world laws you can see things aren't so black and white. There are a lot of socioeconomic factors related to the recruitment of child soldiers present in Tekkadan, reasons why we view voluntary enlistment as no different that enslaving them. Hell, I've had to point out by real world standards Naze would be seen as taking advantage of women in a desperate situation, how Lafter's flashback brings up the possibility of child grooming, and how creepy his comment about viewing his harem as his daugters really is. Then there's the fact the World Mechanics book dropped the fact the AV system was illegal the entire time, and the show just danced around telling us it.
The end is clear. A narrative can be made to support any group, but they don't always present the entire truth.We see this actually play a role in the show itself a few times. Tekkadan weren't the heroes the show made them out to be, nor are they the monsters Gjallarhorn made them out to be post-war.
Thunderbolt cuts a good bit of character moments from the manga to focus on the battles. Io's most humanizing scenes are completely cut in season two, as well as Daryl's relationships within the Living Dead. The manga is better.
Origin just feels like a straight up fanfic, trying to make the characters you love seem more awesome. It also makes it feel like their involvement in the One Year War their destiny, making it feel rather artificial. Not to mention how Yaz views the characters differs from Tomino. Tomino, for instance, views Char as immature while Yaz sees him as this complete badass. That's just me though and I know a lot of guys who like it.
Twilight Axis is like 30 minutes total, but they needed to explain what was going on in the description for the first episode. Yeah. People really recommend the novel though.