A sacrilegious idea perhaps but one to ponder: will Shimoku sensei develop Sue further or is she doomed to remain remain an Enigma in the Genshiken?
More-so than any of the other main characters we actually know very little about Sue and then only isolated bits of info:
- She is American,
- Age unknown but hinted at being younger than she seems. To extrapolate this, one could therefore assume she is gifted, reasonably proven by the fact she picked up at least spoken Japanese pretty quickly and also that she has entered univercity,
- She seems protective of her female friends ("Die Sassahara" "Die Tanaka") to the point of being feral - the brilliant scene in the public bath after comifes where Ogiue was explaining to Keiko the Madarame Harem. Although that outburst and another one later may be more in response to any suggestion that Sue herself could / should be involved with Madarame.
Umm, no other hard facts spring to mind.
Some of her traits are contradictory. For instance, from her introduction to the present "Ogiue Chika isa my wifeu" has been popping out of her mouth and she is quite clingy with Ogiue. Yet in recent (Ch 102 has been out for a few weeks now) times she has been getting flustered around Madarame.
The more I think of what has been seen of her, her life seems to be one of striving to fulfil anime memes in reality. I think that is what happened when Ogiue laid her head on Sues lap (Meme come true! Sues head blew off steam). Perhaps she is currently trying to manipulate Madarame and Hato into a relationship, something she directly encouraged in Ch 59 and again later when seeking out Hatos Mada x Hato drawings. That would push her BL buttons.
Certainly every time she turns up something fun or intriguing happens, but is that destined to be her only purpose in the story? Shimoku sensei has been careful not to paint her as a lightweight - she gets involved with club activities, pays attention to whats going on and chips in with insightful observations when the situation calls for it. I don't see any personal romance for her among the current Genshiken crowd. She could become the centre of a story arc in future, but boy, she'd have to open up and that could be very interesting!