As a skillbroken hashi user, I can advise you to not pull him and not piece him frag by frag, its not worth it. Ninja itself was, is and will be good in some particular cases (ranked battle, 9tails, few normal teams, but hes a relic. There are better ninjas you can get (roshi, 3rd raikage in the near future, han, but hes hit or miss depending on the enemy) for half of that price. Those ninjas have a wide variety of good matchups and are less situational. Don't get me wrong, I'm personally using my hashi all the time, almost in every team ever since I got my hands on him (mission dealer boxes x2), but exactly because of that I see his pros and cons, and in current meta cons outweight pros. In all honesty, I'm using him as a sustain tank with a potential to stun, but I also run autobarrier in my team and most of the time I use his barrier only to get rid of enemy's interrupt.

Concerning skillbooks: +1 auto hardly ever makes a difference, its like 20-25% chance vs opponent of your own power (upgrade i currently have); +2 auto is a real carry mode, basically immobile 95% of the time he attacks (up to 3 people immobiles every round just by him when barrier is up); passive, no idea. Need 5 more frags to test it out.

If i could take back time, I'd rather 4* him than get +1 on auto.