Koukaku Kidoutai: Stand Alone Complex, Ginga Eiyuu Densetsu Recommendations
It seems that the further we progress in the anime and manga industry with everything that's going on, the further we are from creating mature, concise storylines with in-depth characterization. What these two share in common is the legacy they've created. Not only have these two set out the pinnacle and future potential of anime, but the influence they gave on future entertainment...
Both share a plot with lots of politics, crime, war, etc. involved, as well as mature and philosophical themes. While both are military-esque, these two have different approaches. LoGH involves a lot more tactical warfare, as well as it being set in space.
Both of are highly story driven shows that take their time to craft a unique and complex plot, which is the main appeal.
Both keep the drama to a minimum, thus enabling the viewer to have a non-emotional view on the story and look at all the events from many different perspectives.
Both shows manage to utilize politics as an entertaining and intriguing tool to tell the story of their sci-fi universe. Ghost in the Shell SAC mostly has this in its second season.