According to the just published interim accounts:
IAG does not expect the level of passenger demand in 2019 to recover before 2023, making further Group-wide restructuring measures essential; as a result IAG expects to defer deliveries of 68 aircraft
https://www.iairgroup.com/en/newsroom/press-releases
Sounds like they should just give everyone an extension until at least 2023 so that we can fully make use of the benefits
wishful thinking