Is there a relatively easy way to apply these kinds of techniques (either NeRFs or gaussian splats) to larger environments even if it's lower precision? Like say small towns/a few blocks worth of env.
This is similar to Block-NeRF [0], in their project page they show some videos of what you’re asking.
As for an easy way of doing this, nothing out-of-the-box. You can keep an eye on nerfstudio [1], and if you feel brave you could implement this paper and make a PR!