Whipped out my mediocre paint.net skills and did this in about 10 minutes.
- Added more armor plates to torso. This is a texture change that eliminates the deadly stomach spike.
- Added belt. This is a texture change that makes the other changes look better.
- Added tabard. This is a model change that would likely take some time to add in-game, due to the requirement for cloth animation. It's probably about the same scale of work as Aatrox's banner wings, meaning it could take up to a few weeks to implement a change like this. However, it was surprisingly easy to edit in and make it mesh decently with her armor.
That's it. And two of the changes could be implemented in a few hours of texture work.
EDIT: V2. https://i.imgur.com/PWcEcZl.png
- Added purple to tabard.
- Made tabard less greenish and better shaded.
- Fixed chest a bit.