While Japan has the main Marketo office, Australia/NZ is the original Marketo presence there and several agencies and Marketo consultants are active. It may be possible to get a job with Marketo and then transfer (which I've seen happen).

India has a user base for outsourcing. Manila less so, so the competition from there is less than you think.

I recently had someone in China ask for help so there is increasing interest in China. Not sure they could get you a work visa, but maybe a longer term gig that would lead to something else.

Best way to get out there is to latch onto global project or multinational roll out. I have also heard that Australian visa is possible with Marketo skills if you can get hired by an agency. Hoosh and Datarati were hiring at one pt.