CQI-X Audits - what's the general consensus as to use?

So there are quite a number of CQI audits out there. Theoretically, everyone (in automotive) should be compliant with every one that applies. My experience in reality is that this is NOT the case. They definitely do not all have the same weight with the OEMs. My experience is this:

CQI-8: Layered audits - nobody ever checks for this.
CQI-9: Heat Treating - everyone wants this, everyone asks for it. It's a live and viable audit.
CQI-11: Plating - Hit or miss. Sometimes they want it, sometimes they don't care. (My product is not cosmetic).
CQI-12: Coatings - Taken a bit more serious than CQI-11, but only a bit more.
CQI-15: Welding - One would think it gets a lot of focus, but it doesn't.
CQI-17: Soldering - Almost unused. (My product isn't circuit heavy either, but we do have some.)
CQI-27: Castings - nobody checks this.

And what I mean by "my experience" is when my customers are reviewing all my documentation, they want to know if we are doing CQI-9 on our suppliers. The others ... not so much. But they DO apply.

What's the groups experience?