People need to quit complaining so much. First of all, it's a squad so there is no possible drawback to just running it in your reinforcement deck. Second, it's really easy to make with Kakashi (Anbu Days) out there. They can't make any Kakashi/[insert ninja with Anbu] squad much better without it possibly turning into the new ShizTon or Kiba/Akamaru.
Fire doesn't have a lot of ninjas with 4 or more support, so they are getting something useful out of this squad.
I agree with the comment about this being more of an earth card. Yamato is almost always a support ninja anyway. By splashing Kakashi (Childhood) or Kakashi (Anbu Days) into your earth deck, you can turn your 5/3 2/2 Yamato into a 5/5 4/4 with more mental power and the ability to use FBG like a champ. And it combos with Sakura/Hanabi. Don't want to give up Planning or CBF? Then don't. Just save the squad for when your Yamato get's injured.
Not every card in the Reinforcement deck has to be a 7/5+ with a devastating effect. The only thing wrong with this card is the hand cost, but it might prove to be a good thing later on.