I can see them using 331s and 323s (and pray that they do because a short formed 323 on 1Y55 will be my thirteenth reason) but surely there won't be enough 323s to do Airport to Blackpool (especially as a 6 car), Glossop, probably Manchester to Crewe, maybe a few Liverpool to Wigans as well as Bolton to Wigan *maybe* using 6 car 323s once wired? Also as a commuter on the Blackpool to Airport services the 323s would be a significant downgrade from the 331s in my opinion in the way the 331s just have a way better interior, standing room and aircon over the 323s, however it'll be much better than cramming onto a 4 car 331
Also how come it still shows Sunday timings as 319s despite them not running regular services here since 2021, as well as their complete withdrawal at the start of the year?