What is the fine-grained topic of the following text: Take Ryan Air chief executive Michael O’Leary, who's spoken openly of his desire to add 15 rows of ‘vertical seating’ built onto planes if aviation laws were to allow - and who, let us not forget, was only stopped introducing a charge for on-board bathrooms when his plans sparked a public outcry in 2011. Only return the topic.
Ryan Air chief executive's controversial ideas for plane seating and on-board facilities.