I imagine that like media tie-in series that generic romances that are N a month with this exact theme sell a given number of copies no matter how good or bad they are. So as long as you avoid so bad overall that the line gets a bed rep you don't care about small bits. I remember a writer that was doing a media tie-in complaining that if they would approve the outline in two weeks and give three months to write the book instead of vice versa it would make for better quality.
