Are you sure about that? I know you have to be NISA L6, but do you have to be L6 in elements, or would field moves be enough? Alternatively you could be tech spec instead of judge. I don't think there is any requirement for your skating to be tech spec.
That's what a British judge told me. So I would guess that you have to be Lv6 in everything. But yeah, worth checking if I move back to the UK.
Tech panel people have to be former competitive skaters.