Quote - Yes that sounds like it.  Read the cr2?,,,,,,,,,,,Oh no, I'm terrible with cr2's.  Well at least it works fine as it is.

Yes!!! I hope that you spend your time on preparing tutorial :)

But seriously - I've talked to my friend. Now I'm sure that problem was with V4 nipple bones. He does not remember where she was from - probably rotica. The same bones has The Girl from DAZ. Girl skeleton looks ok so I think that problem is not with additional bones but with V$ skeleton. If I must read hundreds pages of cr2 I always try to compare 2 similar bones. If I cannot find difference or I cannot find bone :) (sometimes it difficult because of cr2 size) I usually quit. Anyway I'm courius what do you find comparing original V4 hip setting and your V4 hip setting.

Refering to your rigging experiments I very often edited joints in my figures. First I made abdomen longer and edited joints in abdomen hip area. Then I I wanted make my figure sit, I rotated hip acc. x axis, bend, abdomen and of coures bend thigs, but less then normal. It does not work so perfect as your Hip2 but let me use conforming clothing if I readjust theirs hip as well.
Bending thighs is most problem in Poser. I've spent few month or even years trying to make any figure which can sit. Real human sitting has buttock and thighs flat and wide (most of you can check it, because you probably sitting next to your computer). In poser sitting figure has buttock bulged. It looks better in "adult" poses then in normal sitting pose :D
I've tried magnets, morphs, additional handle bones etc. So in your idea additional thigh/buttocks bones look very interesting for me. Mine experiments failed.

Reffering youtube clip. In 15-30 sec. of clip Vicky shakes her hip. I've obtain similar result conforming figure to blank. Later I moved hip of conformed Vicky what affect only her abdomen and thighs.
http://www.youtube.com/watch?v=gV7K9jI5Qok