the general problem of that team is full immune ninjas and heavy healing teams but... they are just not much used in ranked arena (in the sense, what do you do against a kushina habanero/han + water main, sailor sakura, tsunade sannin war full broken? Not much, but they just do not exist in ranked arena because they are weak to shisui and shisui is too common there...)

It also has some issues in dealing with gnw super rares, but i suppose you didn't meet many teams with kurama naruto or with madara and most of the people that use kurama naruto just use that bee roshi meta with CF and put kurama always in the middle (so was a good choice your one to place han there).