As a heavier spender, I planned ahead and was one of the very few who got Tobirama to 4* in hopes to upgrade him when skillbook comes out.

In China he has "Passive 2 +1: Inheritor of the Will of Fire +1: At the beginning of a battle, increase the Taijutsu by 30% of all units from your team permanently"
Second, shouldn't the Hokage req's be in line with the other skill book ninjas at 4* pre-req?

Why the abrupt change in NA?

This is seriously a big FU to the people who are putting money into this game and to those who tried to spent smartly and plan ahead.
At this point, I have little to no reason to recharge any longer. The disappointment is #real