Are they able to do that though? I'd love for them to get the hint that people aren't happy with the drastic identity change to her appearance, but only thought is that would it not give you two different looking Tanya's from Storymode and general ingame play? Or can you make a patch for the corrections?
Of course they are able to do that.
They can even make such corrections AFTER they released Tanya as DLC through a patch.
However, it doesn't mean they will do so. Maybe NRS are pleased with her skin-tone.