Old Trafford would have been a far better venue for the opening ceremony and the double header if it was available with the final at Wembley if London has to have any involvement.

Biggest success for me started 3 years ago when some Italians decided to start a local comp to comply with WC qualification rules, then put together a good enough squad to beat Serbia with local players and get invited to play in the qualifiers, then with the help of about 10 heritage players squeeze past Lebanon, Serbia and Malta to qualify for the cup - then they put together a mostly heritage side that had fantastic results, including a win over England.
There is now an opportunity for Italy to put some sides into the French comps and rapidly improve their local comps. Apparently they have applied for government funding and have the support of the strong Italian Rugby Union to get it.
I think we have seen the fastest development of a minnow nation yet. They have done in 3 years roughly the same or slightly more than the USA have done in 14 years, and the fact that they have more heritage players and are positioned near the south of France means they should be able to build rapidly on what they have achieved.

Including having two conflicting governing bodies which needs to be sorted out in both countries ASAP.

Failure: An assumption on my part that you couldn't post anything positive.
Success: You've just proved me totally wrong.

But on a serious note.....

Success: The atmosphere at the stadiums and the sportsmanship on the field. The feeling that every game is an event worth being at.
Failure: A couple of iffy venue choices is about all I can come up with.

7 getting the rights in Australia is definitely a success. Having every game live is definitely not what we would have got with 9. Their history suggests we wouldn't have even got every game shown. 7mate is in fact available to the vast majority, so it's an almost negligible point.

7mate has been good.
after the first week or so they started showing replays in the early afternoon as well as live matches.
all the games, even the minnow games, are getting replayed.