1. Only Oasis knows when will the Ninja Fragments will come back in this event but it is also possible that what Scarlettblue said might get happen.

2. As of now, we don't have that amount of Rebate in Seal Scroll rebates. Only CN servers has that above 300 marker rebates that gives Ninja Fragments such as the Six Paths Ninjas .

3. If all you care is about the GNW packs and your little group can manage to join and register the weekly GNWs then it is good for you to stay with your group but it has some disadvantages too like not having additional percentage in Coins and Group Contributions. On the other hand, if you're the kind of person who wants to win battles and just like what Boruto said "I don't like being a loser" kinda guy, then you must consider the deals from the 2 stronger groups in your server.