The World Trophy does sound really promising. I think that it will ensure that some of the second and third tier nations will get more meaningful rugby. It will also allow the IRB to scrub some of the qualifying process that means teams have to travel all over the place for one-off games.
I believe that the IRB should also reward some of the nations that do well during this tournament with guaranteed games and tours of or by some of the top nations.
It would be great to see a nation such as Georgia touring New Zealand, and even if they didn't play the All Blacks they would still get some great games against provincial and Rep sides. The Georgian players would learn a lot and they would be well-supported by the local crowds.
It would also be great if another top nation - say South Africa had a quick tour of the USA. Imagine how that would pump up the popularity of rugby in the USA.
So what if these ideas would cost lots of money - the IRB could have a ten-year plan to really promote rugby in targeted markets like the USA, China, South America, Russia and other places.