I'm sure appropriate lawyers have already answered this, but would the Californian courts hold any jurisdiction over a UK incorporated company (and/or directors) and the NZ main entity? What action could this court realistically impose on the company?
Assuming the defendants get legal representation, lack of jurisdiction will be one of the first arguments made by the defendants. Bitcoinica LP will likely have been liquidated by early 2013. This is about setting the stage to go after individuals and their assets. Also, obtaining a judgement and enforcing a judgement are two very different things, especially if enforcement requires an order to be domesticated by a foreign court (hell, it can even be problematic getting judgements made in one US state enforced in another).