This is probably the most dangerous part of looking for references. The fact you limited yourself really will play a huge role in your design approach to your elements. If you dont limit yourself you may not be able to narrow your idea down.
I asked MCallahan a question since the cohesion of elements seemed to come from all sorts of references. I proposed looking into narrowing down the environmental conditions that his temple would exist in .
Just narrowing it down will help especially when it comes to finding elements that are believable to fit into the scene. Which in turn will bring a piece a certain level of believably.
I would like to pose a similar question to you … but more honed in. The term “WORLD” is too broad for the piece you are working on.
So take the elements you have so far and decide on the environment they will live in. It looks like most of your references contain water elements.
SDince you mentioned scavaging… i put a few images in here: Bioshock , Divergent, Waterworld, and Maze runner. Hope this helps get the juices going…