Why not, if she doesn't have a physical form why not redesign her voice and 'body' to be a male should she ever be rebuilt. Get a bromance thing going on with Master Chief.
Edit: Didn't expect this to get bumped. Still a rousing topic, should be discussed.
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I want an AI who's avatar is nothing more than a giant throbbing dick. And when it's speaking, the urethra moves back and forth, ejaculating everywhere. The AI even tints parts of the visor white to complete the effect.