I asked this question of the VFX Graph team last year as I’m using my own floating origin system and wanted a “custom space” transform option to parent particles to, which would shift with the floating origin. This would give world-space like behavior for particles with a floating origin system. Here was the answer:
Feedback Wanted: Visual Effect Graph page-11#post-4552234
From my limited testing, it works, but I just wish they included it as a built-in option.