Helinut your statement ....EASA ensures a national authority cannot hold up aircraft in this way anymore....
.....is not totally correct. There are a number of outstanding 'issues' on a number of airframes that each National Authority has obliged EASA to rethink under the so called Schedule 10(1). It will take a long time to work through as EASA is barely staffed at the moment. Types facing the ire of the CAA include the Notar singles. Other nations have different beefs that I am unfamiliar with.
That said any new airframe types [and those not currently listed as due for special treatment] are automatically waved through everywhere now as soon as there is an EASA OK.