Randomness of thought here but we could always go a different way with the reviews and rather than try and rate it on different sections, we could do something like:
I liked that, EL. I think the categories KD listed could be integrated on an "as needed" basis into your proposed review structure.
The reason I think your idea works better is because of the myriad of different peripherals out there. I am interested in whether something works and is well constructed. Price is also subjective if we are talking about the greatest controller ever made.
When reading hardware reviews for something like a controller I am interested in the two factors I mentioned above: function and durability. Honestly I won't know if I am going to buy until I've held it. However with something like the Pelican System Selector Pro it is a lot easier to determine, via the review, whether is functions as advertised.
Thus I think a more free-form process is more appropriate. That said, similar items like controllers should follow the same general outline, while a switch box could go in a different direction.