Originally Posted by
Coffee drinker
Wouldn't discount Berlin. It's served with Scoot at the moment but may receive an upgrade.
SQ tried that years ago when they were flying Berlin via ZRH as a tag on. Took it once in 1996/97 IIRC on a 744 (in Eco). Still was marvelous over LH in those days. Anyways, the route is unlikely as others said, not enough premium pax.