I agree completely with this sentiment. Would be nice to see a skin that better reflects the 'secret agent' portion of her lore/backgrounds. I mean, I guess spellthief lux kind of represents that, but I just don't care for the look of it.
I'm kind of thinking something thematically closer to Black Widow from the Avengers movies (no, I don't want her in a revealing skin-tight cat suit, but just give her a look that screams 'super spy' but League of Legends style).
Perhaps something thematically resembling Faith from Mirror's Edge?
http://i.kinja-img.com/gawker-media/image/upload/s--t_CWrqmM--/c_fit,fl_progressive,q_80,w_636/18qfezyy7u2enjpg.jpg
Or perhaps a more form fitting outfit with a cropped jacket and utility belt?
http://www.fashiondivadesign.com/wp-content/uploads/2014/01/Cropped-Jacket.jpg
Or something...
Also love the 'Darklight' skin ideas that have been thrown around from time to time on this forum. Inverting her to use darkness/corruption/void instead of light.