Although I agree with the release of new content my main issue with so many people on the forums is that the only thing they really care about is new ninjas, hence the reason they always list new treasures first.
We have moved at a much faster rate than other regions already but, it is exactly as someone else mentioned, done in large patches rather than small steady ones. Also, the guy who pointed out that adding a new pack won't alleviate your boredom is probably spot on. The reanimation pack only has, what, 6 ninjas? 2 of which free players won't have access to unless they saved seals for quite some time and then, even at that, most likely won't be usable in real fights due to being only 2*.
Now that doesn't mean in any way that I entirely disagree or don't feel bored at some point as well. However, I would much rather they fix a few of the blaring current issues, arena and matsuri being big ones, rather than them just pushing a new treasure out. Shop updates, home upgrades, ninja exam and new survival are all much more important in my mind than a single new pack.