paramnb.Widgets should "inherit" certain parameters from its "parent"

[ceball]

When you change values in widgets belonging to a Widgets (call it A) for which next_n=1 and button=False, the next cell is executed automatically. However, if you open a new Widgets (call it B) to edit the parameters of an object selected in a Dropdown, changing widgets there has no effect (even when you press B's Close button).

I would expect B to cause A's execution to happen as specified for A. That is, for A with button=True, nothing should happen when you change the widgets on B, until A's Run button is clicked. For A with button=False, changing B's widgets should cause execution. (Same for callback.)

The above requires B to be wired to A in some way.

Then there are also parameters which should be inherited in the more traditional sense display_threshold, tooltips, show_labels, etc.