What would you like to say?

Currently Display create some attributes when calling .plot().

First, it is a bit weird that those attributes does not exist before calling .plot.
Then, it also gives the possibilities to user to alter the internal of the displays which might not be the best.

So an alternative is to make display.plot() return the matplotlib figure or seaborn facet grid such that the user can further modify it but without storing this element as an attribute.