I think this is one of those areas where there’s a good feature introduced into Nuendo and it’s a bit “left behind” after introduction. I haven’t used this feature for different reasons, one reason being that stems need to sum to the main mix (although I realize that there are probably situations where nobody notices a minor difference), but as I said I can see the use for it. More importantly it seems like it could be a relatively cheap and easy addition.
I could imagine just another drop-down window either in the export dialog or in project setup (or have it follow metering preferences set in Control Room) where we’d get to choose BS.1770-0/1/2/3 etc…