Quote -  a lot of stuff in a poser cr2 is proprietary also I think...  I'm just wondering if you can package that sort of change as like a pose file that just tells poser to move these joint centers to these new co-ordinates

that's how I hope to get it to work for V4... without getting DAZ on my back

Provide Project E slightly different from V4 and then make a pose file with a python script that reads the installed V4 CR2 anc copies the joint centers? That way you need V4 from DAZ, you use DAZ-based content, and thus not essentially stealing from DAZ.

Well?

"The fool is not the one that does something foolish, but the one that does nothing at all."