I don’t know if this is a good idea or not, so I’m putting this here to hear what others think:
The sub-items in Monday. com’s tables have their own table headers, meaning they can have different fields to the parent, and not be all the way on the right with lots of empty cells.
It might have some down side like not aggrigating the same column name along parent and child, meaning no copy pasting, and other down sides. Curious to hear from others if you like something like this or prefer the way it currently is.