Air safety will be improved because there will be less chance of actually colliding with anyone. It's axiomatic- less movements equals less collision risk.
Whilst NAS diverts attention away from the real cause of the slow death of GA in oz (the relentless increase in charges, either for previously subsidised services or the addition of charges by the sale of public assets such as airports and infrastructure- don't even get me started on taxes and GBEs), the decline will continue.
Keep fiddling while Rome burns.
A genuine lament.