I only have a problem with Smart Bomb. Yamato easily hurts your own team. Sure, there might be a couple people that could use it well; but for the most part it's not hard to counter. Zephyr is a sig. The person using that would have to sacrifice other areas proven dueling builds. Smart Bomb, however, is the best of both worlds. A decent sized prox bomb coupled with a conventional duel sig. No thank you.