When selecting some object in the 3D view , it selects all objects hierarchy, not possible to select individual objects of the hierarchy.
It's good when needing to move/copy/past of hierarchy blocks, but painfull workflow when you need to modify child objects.
This is how it works :
-Select the object in 3D view you want to modify : it select several models in same block hierarchy
- Scroll on Scene tab to find selected hierarchy block
- click on each child object one after other to find the good one you want to modify
- When found, you can modify the child object
So it would be a really big workflow improvment to have some option like : select child only for 3D view
This way selecting on 3D view, it would select directly the child object and we could directly modify it without needing to loose time searching it on scene panel.