The idea of Kusanagi never smiling, telling jokes or showing levity is a fallacy. She was not above moments of mirth in Stand Alone Complex at all. In Stand Alone Complex, she was never afraid to get flirty. As for wearing makeup, she did frequently get dolled up and wore fancy outfits when she would go on undercover ops.
Just remember guys. At the end of the day she's a cop. Also, she is a cyborg, but she's also still a human by birth. She still has feelings and emotions. In the comics and anime series she was bisexual. In the anime series she had multiple girlfriends. She wasn't some emotionless, stoic robot. She had her own personal life off of work where she liked to settle down and enjoy her off time. She would even go out drinking with Batou and co, even though cyborgs can't really get drunk.
Most people have this view of Ghost in the Shell that's really solely based off the movies. Don't get me wrong, the movies are very good, however they are not the be all end all for Ghost in the Shell. There's a lot of other material out there. The Major is barely even a character in Innocence. It's really Batou's story.
The original movie is good and iconic, don't get me wrong. But it's also very short, with a threadbare story. There's not a whole lot there. Stand Alone Complex actually opened the whole world up and incorporated more of the concepts from Shirow's manga and actually gave the other Section 9 members personalities and backstories. I think we barely even learn anything about Togusa at all in the original movie, and he barely does anything in it either.
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