Hi! I don't think mistakes made in the past are irreversible. I believe that it does take some time to slowly mend the gap between powers but it is not impossible. There will be an ultimate training update in the future. The reason for the delay on some of the updates that would have came with the Naruto 3.0 and Naruto 4.0 update is due to the fact that those updates were given earlier than expected. Things like GNW Treasure and also Shisui should have came at a later date, but they were given early due to players feedback of wanting that. Due to this reason, it feels like the other updates that come with it has been delayed, but in actual fact they are really just following the timeline that they were supposed to come, while certain features were updated earlier.

I hope that clears some of the misunderstanding. They will come for sure and we will definitely update you when more is known.

~Jib