So here is my opinion about CRNAs compared to physicians:
I agree that CRNAs have all the skills to adminster anesthetics to most patients- the reason why they need to be supervised, I believe is because they are less trained to understand and implement changes in the field of anesthesia. Let me ask you- as a CRNA how would you make a change in how an anethestic is adminstered- either upon the realease of a new drug or even class of drug or a new procedure, or a chcnage in how a surgery is done. Wouldn't the most likely way you would find this out be via an anesthesiologist or from you institution (which means by physicians)- or do you claim to keep up on the literature? Now you can claim that these changes are infrequent, but in medicine and anesthesia they will occur. You can't be 90% able to take in and understand and evaluate these changes- you must be 100% able. Medical school and residency allow doctors to fully understand the why of things and not just the how. Even when I was a third year medical studnet and nurses thought I was an idiot because I don't have doses of meds or how to do an IV at the tip of my tongue, the understanding of the medical field I had was way more than any nurse. Most nurses did not realize this. They understood what they did everyday much better than I did, but how that fit into the field of medicine they were mostly clueless.
Also I don't know, but I doubt too many CRNAs do liver transplants, or Cardiac cases, pediatric hearts, complicated neuro cases, etc... There will always be those very infrequent times where something weird is going on- that you might do the same as normal, but it requires something different and you just don't even realize it. I know it hard to convince someone that that don't even know what they don't know.
I think CRNAs are really useful. They are well trained and deserve to paid well. Sometimes I think they get confused that because they can make almost as much as anesthesiolgist that they have almost the same skill set. It's not quite the case.
Anyway, I don't mean to be confrontational, but I think you should think about these issues.