I have not ordered a Vision in the end because of the frame rate issues. I had gone as far to clear the creditcard a couple of weeks back with the expectation of ordering one.
I would hope its something that can be corrected with a firmware update. It is a massive part of the world that can't use the Vision to its full effect - UK & Ireland, Europe, Australia, New Zealand, Hong Kong in China etc.
Hope you get an answer from DJI soon on the PAL issue.