Yes people who are interested in reading a whole play would likely concur with each play summary. Yes, I am vacillating on the need to cite secondary source.  However, since there is objection to citing primary sources, I have gone back to requesting secondary sources.  In an article about an episode of a given TV series or about a fictional character from a television series, it is common to cite the primary source.  However, in this case, I do believe secondary sources abound on the subject.  Why not cite them.  Saying all readers of WP would know how to verify this unattributed claim of what the plot is seems to be a bit of a stretch in terms of adaquate sourcing.  Please find some source preferably secondary, but at worst primary so that each plot summary is sourced somehow. (t/c//WP:CHICAGO/WP:LOTM)