I agree that Jane should be the basis for any 'iconic' FemShep they come up with. From those, I'd say 5's face and 6's hairstyle (but red, FemShep has to be a redhead) would be the best combination.
Also, is it just me or does 1 look like Cassandra from DA2?
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"I'm Commander Shepard, and you're standing in the biggest library in Citadel Space. Look me up."