While I agree with you on certain points, I have to disagree on some of your assertions. The CoP wasn't really intended to "improve" the quality of skating in the first place. As you've stated it was just a system devised to allow more transparency in the judging process. Granted, there are still many flaws, but it's unfair to blame the new system for any possible "declines" in skating quality.
On a similar note, I don't really believe that skating quality has even declined that much. There have always been just a few strong talents, and the rest of the field was relatively weak. I feel it's exactly the same today. When you mention the horrible spins and skating quality, you're probably referring to skaters who attempt to appeal to the new system but fail. I've personally found that many skaters integrate the different elements of their skating very well in order to gain those points. I don't see what's wrong with the spins or spirals in particular either. Spins have gotten more interesting to me - some of the positions skaters try now are really interesting. Under the old system, spins were more "traditional" but I like that skaters now integrate more positions and such into their spins. I actually think spirals have gotten better - just look at the spirals of some of the top skaters today. The positions are held longer and skaters strive to add speed and stable edges to their spiral sequences. Some skaters are just not very good at spirals and not willing to improve - but again, this is something that has existed since... the spiral sequence became a required element for ladies.
While I do kind of agree that artistic abilities of skaters have taken a hit since CoP was instituted, I think skaters like Yuna and Mao are good examples of athletes who successfully brought grace and beauty into their programs even under the new system. It's perfectly doable and the decline in artistic quality of many of today's programs is more of an indication of the decline in talent in today's field than simply a result of a new judging system being integrated. Skaters like Sasha and even Michelle were able to combine athleticism with artistic interpretation very well under the system. So do Yuna and Mao. But again, the "well" of skating talent has dried up a bit and the field doesn't have as many strong skaters as it once did.
And also, grand prix events have always been like this. For many of them in the past (and I've been following skating for many years now - maybe not 20-30 years but definitely the past 12 or so years, and I myself am a skater), the winning performances have been let-downs.
The "perfect" 7 triple program is a rare thing in skating, and I think we remember those performances so well because of our favorite skaters like Michelle who has won many titles by skating 7 triple performances. However, that's her. There have been plenty of medalists, even at the Worlds/nationals/olympics level who have not landed even 6 clean triples under the 6.0 system.
I think it's really easy to start pointing fingers at the new system, but I don't think that skating has been affected all too negatively by the system.
This isn't meant to be a vicious post, but I just wanted to put my opinions out there.