I really, honestly, do not know how any serious observer of the game can look back on the Lions series and say that the game is simple enough.
When the result of an important match hangs on a referee's opinion of the "fairness" of a scrum, surely that is not easy for the unaligned fan to comprehend? I have been watching and playing and supporting the game, variously, for far longer than I care to count. And just the scrum laws alone, and their interpretation, is enough to tell me that only a mother could love this ugly child. Apart from anything else, it is surely axiomatic that only an expert scrummer would know what the fark is going on, and no current international referees are expert scrummers. How does this make sense to the disinterested observer? Answer: it doesn't. Guesswork is not intrinsically interesting, or entertaining, even when the result of a very important game, or series, depends on it.
Don't start on the refereeing of the breakdown, or the obvious idiocy of the rolling maul during which the ball carrier cannot be tackled. A game in which a player picks up the ball, and runs with it, and gets tackled, except when he is shielded by a few of his fellow players. Objectively, this is just absurd.
Some of you buggers need to look at the game as people new to it look at it. I had to do that when I lived in a country where American football and baseball were the two major sports that I could watch (soccer also, but not so interesting to me). I got interested in both sports pretty quickly, mainly because they are both easy to understand. Ditto when I lived in Melbourne, and got totally immersed in the VFL, as it then was.
Rugby is not a popular sport internationally, frankly, by any objective measure. It could be a lot more popular - funnily enough, both the NRL and AFL show us how in a confined domestic environment that is actually very competitive. And if the IRB is not capable of learning lessons from other sports (as well as what, no doubt, their own research tells them), we will continue to wallow along.