Practice for differing facial types using some head-canon facial designs for the portal girlies, and a complete redesign for the portal reloaded and aperture tag girls cause I think it would be more interesting than them just being recolored chell.
imma say it Cicero is the best written character in vanilla Skyrim (I'd also say best including dlc but feel free to disagree) and the fact that Todd Howard doesn't like him is proof he doesn't understand what we want