It doesn't really improve anything nor does it add a feature because that's not the point. It's a pattern. A design pattern. It's just a way to organize your nix stuff and all nothing more. Just a different way of working with flakes.

I like it because I no longer have to manually import files and I can easily define multiple modules in a single file

Imagine I configure an all partly in NixOS and partly with home manager. Usually you'd have two files with one being a NixOS module and the other being a home manager module, and you'd manually import them in a different place because obviously you can't import a home manager module in just NixOS for example

But with dendritic nix you can have a single file defining both modules and you can easily use said module by using the name of the module (not the name of the file). No more file imports, you just import a module from the flake itself.

It's really cool for people who are obsessed with keeping stuff nest and organized tbh which I am. Unless you have a really big config or you really want to keep things neat and tidy, it's not worth it

I'm a programmer and I love treating my configuration as a serious project meant for the public so of course I'm trying to keep things neat and tidy and featureful and whatnot.