I would like to see within an assembly the possibility to expand only selected parts to make workplanes and axis visible.
Now I can only choose between expand or collapse all children.
If I want to constrain a bolt or pin for example, I can place it with an insert constrain.
But then it's still able to turn around 1 axis. Then you add an angle constraint to fix the rotation, and the part is fully constraint.
But to do this you have to expand each part instance individually, add a constraint and collapse it again. It takes a lot of mouse-clicks.
If I can select all these parts and had a button "expand selected children" it would save a lot of work.