Unless something unexpected and completely amazing happens in terms of public sentiment and attitudes, I can't see the Friday 6pm slot lasting more than 1 season, 2 at a stretch... I think it'll eventually move to the Sunday evening timeslot or if the Warriors have a home game on a Sunday, you'll have your midday, 2pm and 4pm games....
Personally speaking, Friday 6pm isn't completely unpalatable as I work close to home and am generally home by 4:30pm so I could easily have dinner etc and be ready to sit down to watch a Friday night double header starting at 6pm... But for every 1 person like me there's probably 500 NRL fans who wouldn't have that convenience in terms of work commitments, commuting etc...
Everything else in the deal I like!