Exactly. I don't know who spearheads AR but HOTS is Samwise Didier himself, one of the if not the last artists who's been there since the beginning and has created so many iconic characers and models.
That's why every time you'd see a new character introduced in HOTS it would look so faithful to its IP. I can't think of a single example that made me think "wtf they got this so wrong!!!".
These guys grew up with D&D, rock and roll, action movies and "violent" tv shows. They just made what they knew was cool and everyone loved it.
Nowadays the lead artists are people with 15 arm tattoos, 12 nose piercings, update their facebook status to the flavor of the month "thing to be offended about" and care more about the amount of vacation days they get than what the hell they're doing.
And that leads us to today's so called "new" Hogger model.
But in an age where they want to make female space marines because apparently 40k doesn't have female representation, what do you expect?