I think one of the most important things is the ability of migrant workers to be able to work in the sex industry. At present in Canada, any migrant is prohibited from working in the sex industry. This leaves them in the difficult situation of not being able to contact authorities if something happens to them.
Oftentimes, if they do contact the police, a CBSA investigation is launched, and they are often detained and deported back to their home country. That is one thing we would need to do differently, like in New Zealand.
Occupational health and safety regulations that govern the sex industry in New Zealand are federal in nature. Ours would be provincial, so care would have to be taken that there aren't too many differences across the country in how those regulations are introduced, so that we don't have a situation where sex work occurs very differently in each province.