Michel, the crew team aspects are within the existing CRM training; no need for some 'new' competence.
Resilience is a property of a system; by limiting the 'system' to a crew, which misses the point of improving safety from a wider viewpoint.
The article 'Defining Resilience' identifies a general issue.
'Training by Definition' assumes understanding, - incorrect. Definitions also constrain, limiting practical aspects. e.g. from the research paper "… it outlines the "what," it falls short in explaining the "how."
and from the FSF article;
"Explaining the term is easy; putting the concept into practice is more challenging."
"From a resilience development perspective, humans are seen as a trained resource that provides system flexibility and resilience."
“Individual resilience can be developed through training and operational experience"
… gross assumptions about human behaviour, - and CRM training. The need is for a resilient system which is compatible with human behaviour. (Compare US / FAA / FSF views of CRM vs EASA)
Also see the discussion and references at: https://www.pprune.org/safety-crm-qa-emergency-response-planning/643738…
Resilience is better seen as a new way of thinking about safety - safety management; something which EASA needs to consider.
Is EASA resilient, has resilient qualities, or is willing to embrace resilience as a way of safety thinking; along with Safety-I & Safety-II ?