Those rebates, at least since charm intruduction were around for like... 8 months now? +- 1 week depending if theres any additional seasonal event like halloween, christmas, easter. Those who wanted to know what to expect and when should have already figured it out :P Also considering how long the grind is in this game, whether you stockpile wrong items (eg you put emphasis on refines instead of charms given month), you will simply end up reaching higher rebate during next months rebate comes back. Those items dont lose value, since you should be using those items only during their corresponding rebates anyway. In a long run, it doesn't matter if you use that rebate this month or next, only important thing is to use threshold that has the best rewards:required items ratio

Fully agree with others about advanced threads. Even if they are really in the drop table, there's no reason 60cp item shouldn't drop on regular basis from SA, even at small quantities like 0-1 with 50% chance on each extreme SA. Look at seal scrolls, which have more overall value- they drop from ninja test, survival, sealed on regular basis even though they cost more. Right now only source of adv threads is space-time shop, in which average player that gets 400coins gets a whopping 7threads/month. That, or at least add them to events. It's been 1.5 year since the game release and I could count on fingers how many times I've seen them as redeemable. Even adding threads to the treasure of the sages would be gigantic change for all of us. There's no reason why this item should be that rare, since every new feature that gives power give it at much better ingot:power ratio.

We really need more breakthrough, which is actually beneficial for both playerbase and the dev team. There's literally close to no skilbook from basic ninjas (basic as those from elite instance/redemption shop) that is gamechanging and shakes the meta for heavy spenders, but 1) it provides some variation for collectors, 2)siginicant help for newbies/medium power players, 3) developer team gets praise instead of curses and critique because they add free content. It doesn't matter that that content for top players is useless, it's free content for majority of players. Notice that we arent asking for kage super rare's books and mutations the moment GNW treasure was released, because that would be actually unfair towards most spending players- it's too soon to implement breakthroughs that can easily compete with newly released event ninjas. I don't really know how to put it in even more simple words- we are just asking for something, anything, give us that crappy ninjas on regular basis at least. Considering how many ninjas there are, we could be getting 3new breakthrough and 3 new premium event ninja every month, and everybody would be satisfied. Unless you are planning to introduce them in a gigantic batch together with mutation system, there's no reason to not add more less common ninjas right now.

As for events itself, looks promising. There should be recharge rebate, since spending synergy is great this week, there are viable spending events (treasure of the sages, konoha trees) but there's no recharge rebate at all.