I don't think there is much in the drawers to "replace" Concorde, likeky reason being that it is not mainly a question of classes/luxury etc but a question of speed and crossing time to JFK
! I believe that seating/quality of restaurant...came as a justification of the price to pay for the speed ! Remember that at the start the ticket on Concorde was roughly 20% above First class, obviously in an effort to make money with it.
Now both AF
lost the advantage of speed, and any better seat/meal/service on any wide body will not replace it.