It can also be a good idea to split the RNG into a tree for different areas (i.e. seed multiple RNGs from the main one), so that adjusting the generation for one aspect doesn't shift around everything else in a seed (especially in something like Minecraft where different parts of the world might be generated on different versions of the game).

(Note this is roughly what slay the spire did, but if they were to use a 'master' RNG output as the source of these sub-seeds then these correlations would also not be a problem. With a custom implementation they could save the RNG state directly as opposed to hacking around calling the RNG X times on loading a save)