Sage naruto and danzo are the last ones we will get, moreover what's the point of giving them now if people have problems just in getting them the first time 3 stars? Personally speaking i play since january, i'm not a free player and i have sage naruto 3 stars 33/100 and i still don't own danzo. If for a player like me those two skillbreaks are useless think how useless they are for a player that begins to play now. Whales have other ways to waste their money.

When we will have sage naruto fragments in the merchant shop and kurama naruto available we will have also his skill breaktrough.

But in general i agree that we need more ninja skill breaktrough, just not those two. Ninjas like haku, itachi, deidara, tsunade sannin war, yamato, normal kabuto, normal gaara, the other common konohas. These ones are the ones you should expect to get now.