[font color=\'#000000\']I think asking such a question in a public forum is a bit naive. There are literally thousands of slot canyons throughout the Southwest, each with its own unique characteristics. Many (most?) of them are not readily accessible. Some of those described as "technical" are sometimes visited by experienced canyoneers, while others require a good amount of off-trail hiking, even swimming, to get to.
Kelsey has documented a good selection of them (and I agree with your observations about his ratings and otherwise quirky descriptions and maps) but he sees them as a hiker, not a photographer.