I suppose I'll post my own findings of the new function here.

1. As stated earlier, the ninja recruit scrolls have been relocated to the recruit tab. It may not look as good, but there are some upsides to this.

-The fragments now work similarly to how the Grocery store works, as they restock every day a certain amount. If you don't buy all of them, lets say you buy 15 Enma frags, the 20 will be added and the remaining 5 will be added to that, resulting in 25 available frags the next day. If you were to not get any Sasori fragments one day, it starts at 10, the next day it would be at 20. I'm not aware of any caps as of the time of writing this, but I'm assuming it's something like 80-100 frags. Perhaps lower for those like Nagato or Hanzo, which I could see only being 20 or 30. I hope I'm wrong in those cases.

-They have added two new redeemable ninja to the roster of redeemable ninjas, being GNW Shikamaru and Sage Mode Jiraiya. On the downside, they have removed 1 ninja from the roster, being make-out paradise Kakashi (Formerly the only coupons redeemable frags in there.).

2. As also stated earlier, ninjas now give you a buff, and it is worthwhile to level, cultivate, and awaken them. I got around 20k from using all my resources on various ninja last night. I also did a bit of an experiment and worked out how exactly the stats work for them. Each ninja gives initiative and an X% stat. For example, Kurama Mode Naruto, or Kuramato, gives like, 5% life. That said, this is calculated based upon the ninja's own stats. I experimented with Jinin Akebino and only got Taijutsu from leveling, awakening, and cultivating him. In short, you get a percentage of whatever stat from a ninja added to your entire team. I have heard, however, that mood does not affect this. I haven't tested to confirm this yet, but I have indeed heard that mood makes no difference from a few other players.

I'm not sure how much of what I said was restated, or if this makes any difference whatsoever, but I hope this reply helps!