Never really understood the use case for prefab variants before but that is actually very useful.

Will restructure some of my systems around it.

I do keep most of my assets together but split them into their respective areas.

Sprites -> Units -> Military -> Swordsmen.

Makes it easy to find a specific sprite as I know all the swordsmen sprites are in one place.

I can see that being useful if you have large complex objects with many sub components.

Personally I am keeping my dependencies very strict. My game logic (ai, movement, etc) does not know and can’t access my UI but my UI can access the game logic.