This doesn't really fit with Forum or In Game, but it would be great if there was a press kit. Other games offer these to the general public, which is great for Content Creators.
Assets like high res transparent imagery of characters, vendors and some weapons. Promotional screenshots of the game set in each of the planetary locations. HD logos would also go a long way.
This would improve the quality of thumbnails on YouTube and even the flow of videos you see. And this is why you see consistent imaging across games like Destiny 2's content creator works. They actually have press kits linked in the footer of their front page.