Your first and third points I would most certainly agree with, you summed it up perfectly. The product is excellent, and when I lived in NZ I got to see a few matches, which were excellent. But it was before the conference system, so I never got the chance to see Highlanders Vs Crusaders due to the Highlanders only playing them away, certainly home and away matches of the conference system is a strong point.
The expansion of Super Rugby into South America could be huge pull for rugby within the region, and within Japan if they did go there. Teams like the Bulls, Brumbies and Chiefs would just not raise the standards but it would be a massive draw. Also if there was a strong semi/professional domestic game in Argentina, which included team/s from Chile and Uruguay, that acted like a ITM cup that would help rugby even further. Argentina have the largest pre-teen playing population in the world, 500,000 I think. If there was cup which involved Super Rugby players not involved in the Pumas and the best young club players Argentina would soon have a country full of talented players, while also helping Chile, Uruguay and the region in general.
However, I don't agree that privatising teams and removing player restrictions would be a good idea. Though most of the top 10 unions would rather protect their position, the IRFU do a great job of running the game, as do NZ and even SA. Also, look at the fallouts between private leagues and teams, i.e. WRU and the regions, RFU and PRL and SRU and Edinburgh. Also, removing player restrictions would have a knock on effect to the national game and we would have leagues that are like the English football league. Like Cardiff FC, only thing Welsh about them is that they are based in Wales. Unions may be self serving but so are private enterprises, I think the iRB need to step up and invest in a pro league and treat it as a investment into the future rugby growth and a potential revenue stream.