Bring on more Prometheus material, and more pathogen creatures, it would tie in well with the overarching story in the recent novels.
On a related note, I hope this brings in more PS4 players because the last few times I've tried to play I haven't even been able to get a coop game going, I assume from lack of players. Which is sad because I had fun with the game at launch. I even drove to Best Buy on release day and grabbed one. But it seems the playerbase has now vamoosed. Is there a higher playbase on PC? If so I might consider getting it for PC.