I’ve had the exact same thought before. I think they were afraid of making the designs too “cartoony” and wanted them fully realistic + gritty instead. This is why a lot of the premium sets they port straight from the minis look off and lame in Darktide, it’s because the characters just aren’t bulky enough so it throws the whole design off.
As for why ogryns are such hunchbacks I was also wondering. Maybe they wanted them to feel bigger but still keep the model a size that works for map designers without making too many concessions or something. So the solution was make them big, but make them pull their head in. They stand up straight in some cosmetic menus and it looks way more ogryn like.
I’d LOVE for this to be how veterans in darktide look

unfortunately their artstyle decision went a different way.
Also, while I’m at it, I’m disappointed we didn’t get cool ogryn faces like this
The ones we have look a little bit too human for what I like
