The new kids are interesting but they're obviously weren't planned and Watsuki just wants to add them in to have a reason to continue his success manga just like the new Yashahime anime is continuing where Inuyasha left off for the sake of nostaglia bucks. Despite the blatant fanservice, I'll read it to see if Watsuki would add more fuel to fire by pandering to old fans or if he can add more to his legacy but I'm not expecting anything groundbreaking.