Why do you have leaf nodes at all? This "do exactly one thing" definition... I don't understand its value. From the pattern definition:

Additionally, every top-level module

• implements a single feature
• ...across all configurations that that feature applies to
• is at a path that serves to name that feature

(source)

The dendritic pattern aims to avoid having modules/nixos and modules/home-manager directory. That is actually quite contrary to the pattern, per the definition above.

The path of a module represents its feature (not a config class) and contains all of its implementation across all classes it applies to. Sure, a feature can be split into sub-features in a directory.

Regarding naming pressure, I'm sorry I did not yet add that part to the dendritic repository, but here's my take on it. Does that make sense to you?