A suitable reason being that other EASA country members recognise EK ratings for EK aircraft only, thereby avoiding the CAA's 7 year IR expiry rule..!!
Wish that were true, but I've been told by the CAA that the 7-year rule applies to ALL EASA states now...
.. because this is the reason
for EASA.
EASA is a common regulatory
authority for the WHOLE collection of member states. Everything that is written is in stone for ALL states.
JAR was simply an advisory body for states to pick and choose from as they liked (except the Brits of course who abided to the letter). Now we have mandates to be adhered to...
Confused? (I am) and I expect that just like the EC most other states will find a get-out clause for their nationals while the UK and probably Germany stick steadfast to someone else's ideals.