Based on this - a quick schedule idea, where TV3 in NZ became a news channel during the day:
5.30am AM Early
6am AM
9am Newshub Now (rolling news)
11.30 ITV News at Ten
12pm Newshub Now
1.30 7 Morning News (live from Sydney)
2pm Newshub Now
5.30 Sport Today (new show - pretty self-explanatory)
6pm Newshub Live at 6
7pm Ryan Bridge
7.30 Primetime schedule; as now
10.30 Nightline (rebranded - or debranded? - Newshub Late)
11.00 Late night schedule; as now
~1.00am Informercials (or alternatively, relay CNN International)
Weekends would stay as they are now - usual mix of repeats, NZOA stuff and the odd sporting event.