What is the benefit of setting the parent property on a resource? The resource graph is more visually pleasing, but is there any other part I'm missing?

Opts are inherited from parents. This is mostly relevant to providers.

It's mostly relevant in Components. I think @little-cartoon-10569 was specifically referring to the fact that setting a parent will ensure that the child has the same provider as the parent. I wouldn't bother with setting parents unless you're using Components.

Yes, or if you're using objects that are equivalent to ComponentResources. We have a weird logging decorator object that creates a few resources as children of a selection of passed-in resources, so we use

parent

to show the relationship there.