I have zero problem with at least 1 NRL game a season at NSO, even 2. Likewise I fully support North Sydney's history and brand being officially recognised as part of the Western Bears.
The advantage of doing this is that it makes the Western Bears (both as a brand and a club) much bigger than a mere Perth side with no ties to Norths beyond the logo/ colours. The Bears were/ are one of the least polarising, most likeable teams in league history and in a roundabout way their lack of Premiership success is an advantage because it makes it easier for both the people of W.A to accept the club as their own and building their own history, without alienating the Norths element.
In the AFL, the Fitzroy Lions had a similar standing amongst Melbourne football fans and had the Brisbane Lions been simply Fitzroy relocating, it would've been a less controversial move than the Fitzroy-Brisbane Bears merger that eventuated.
If Norths had managed to relocate to Gosford (as was the original plan) they were to become the Central Coast Bears and incorporate Norths colours and history. Just because they're moving across the country shouldn't change anything else. This club has the potential to be huge both in terms of it's success on the field and its' standing in the game...