Use a stripped v4 donor rig, same as any v4 specific conformer on mp. Used to be a blank v4 floating around out there for such a purpose (I have it). Not seeing the problem...

The donor or development rig was created by DAZ for use in conforming clothing and other add on conformers.  The issue is the fact that the OP has taken the V4 rig which is copyrighted to DAZ and used it to rig an original figure.  The only way I can see DAZ permitting the use of the V4 rig in a figure other than V4 is if it was sold exclusively through DAZ and DAZ garnered it's share of the profits. 

If the product had been ready to go 2 years ago, DAZ would have accepted it.  This product would have been similar to another DAZ vendor's Cyborg that used the V4 rig.  At this stage of things, DAZ no longer provides active support for V4.  They have no problem with a vendor who want's to offer a V4 set along with the G2F set (like the recent sets from Pretty3D) but their primary focus is now on the second generation of Genesis and Generation 6 line.