I think you, SB, have already a better take on this than most any of us forumites, and the tips above real are nice, indeed, but here it goes:
Pay special attention to the potential weaknesses and alleged strengths of the particular knife (compared to its predecessors and competitors, if possible). The lock and design must be some of the C's fortes, so it's interesting to hear, how they fail.
And do utilize other's previous perceptions! I think there has been some talk about, e.g., the possibility of a rolling lock inadvertently unlocking with the thumb in full grip. Might that be a problem with the C? Why not? Etc.
Get feedback from the designer/maker, if possible. Start with asking, what was the idea behind the knife (or some detail in it), report your own findings and test results, and let him/them reply. Maybe take some of that into your review.
Follow your "original idea" with that particular review/knife. It is essential to have a comprehensive plan for the tests etc., (and knowing you, I think we'll into a treat here), but without some original idea the review may lack "flow". It's not only a research report.
Don't know about others, but I'm completely fed up with "selling pitch", marketing hype, etc.; won't listen to that any more. Unfortunately, most published reviews are but such (including mine of the CRKT Mirage in the knowledge base of BF, though it wasn't meant that way). I feel sad about reviewers who get me into wanting and buying a knife that I soon find myself neither needing nor liking. Such incidents take the joy out of collecting knives. People who manage to say, after careful consideration, that I don't need a particular knife, I value immensely.
A single review cannot be everything. It's an address in an ongoing conversation. But it is nice to know, what sort of an address it is and where can some other thoughts be found. In this, it might be helpful to include many URL's into the review. But don't water it all down by saying that "this is only one person's opinion", etc. No need to publish mere opinions; just the true and well-founded ones.