[Knight of Gondor]

I don't view the addition of a powerful Uruk captain as taking anything away from the film.

Peter Jackson explained that they wanted to give Boromir a more significant death than just the victim of many arrows fired by random orc soldiers. To have braved the Uruk-hai warriors with arrows already twisting his insides was indeed a great act, and a fitting, heroic end to the son of Gondor.

A female Lurtz? I don't think any of us would want to imagine such a thing!