BY 767-200 have 290 seats in the summer only. They do not operate longhaul routes in the summer.
If they operate longhaul, they are configured to 274, that's a seat pitch of 30", that's the same as all major charters in the UK and many sched airlines.
Australia routes have never been operated by a 767-200 with 290 seats.
A fully laden 767-200, even a cruise flight to FLL
can make it if flying from LGW
. If flying from an airfield with a shorter runway ( a lot of cruise flights operate from smaller airports) the 767 can not be fully fuelled, therefore resulting in a tech stop.
I also think the 200 will be around for a while yet as they are well maintained and fully paid for. New interiors will be fitted this winter.