As if all of the two Concorde rooms would be anything to die for...
Access to these or the Concorde bars are not GGL benefit, but a separate benefit which previously was available through other means as well. In addition to flying First class.
Most of GGL benefit are in improved service and personal recognition, which I think will apply with AY and Lumo.
and being escorted to the front of any queue, when boarding at the time of desire would be pleasant.
Which then is a part of the CK treatment I was asking about.
Anyways I believe this horse is dead enough, and in summary there does not at least yet appear to be additional soft perks on other OW airlines.