DCP-o-matic

I'm working on a DCP for our film festival, and one of the DCPs is in 3D, and we're hoping to do a VF package with Chinese subtitles. But I realized that the SUB of the VF package is zero parallax, while the English subtitles of the OV are always out of screen. This makes the SUB of the VF package unusable in 3D scenes. Is there any way to adjust the Z-axis position of the subtitles? Even a global adjustment will do.

At the moment, no - there was a request for this a while back, and I just increased the priority a little.

Wondering wether DCP-o-matic would simply pass through z-axis parameters? Maybe one could add them externally.