Went for a ride in Norwegian's dash 9 Bangkok - Oslo, so can provide a toilet report. Much better than Jetstar's dash 8, which is pathetic. If the same people, using the same logic, have specced out Q's new ones, there are going to be a lot of unhappy campers. Had the pleasure of spending 10 hours in the seat from hell (42C) Honolulu - Sydney last year. 17 hours will be special.
Seems some sanity has returned to the toilet door design department at Boeing. Those on the dash 8's took the meaning of plastic fantastic to whole new levels. Most of those on the dash 9 seemed to have gone back to the old style of concertina inwards. Except one which, from a distance, seems to open full width into the aisle. That should work well.
Scooting back home from Athens and according to Seatguru it has the same layout as Jetstar. ( this is where I would insert the crying emoticon - if I knew how to do it )