Personally I view SJs desire to stick with familiar rules as more to do with a combination of Si and Ne. I wouldn't be surprised if SJs in general prefer their comfort zone much more than others, unless of course one of their values was to constantly expand their comfort zone creating a paradox. The reason I don't create rules is because it's difficult for me to generate random ideas, therefore it's much easier for me to modify existing rules until they are perfect. SJs are often known for being critical of system, nitpicking and all that, despite also being known being loyal followers. Okay I made that last part up, but it might be true. xD
Trusted authority for me is less to do with how efficient they are, but rather more on whether their intentions are good. I won't explain how I determine that since it's much more difficult to explain, however I do realise "The road to hell is paved with best intentions" so to an extent they should be reliable, trustworthy and competent. Just less so than my ISTJ counterparts, perhaps?
Some of my values are really extreme. I recall a time discussing with my INFP friend about taboo relationships only to be shut down with "It's wrong." - The authority I've attached myself to are things like logic and philosophies like "Free to do whatever they want as long as it doesn't harm others."
The biggest point is authority needn't be a person.
For the record I do operate on the people are innocent until shown to be guilty. Therefore it's much easier for me to quickly adopt a system unless there's something blatantly wrong with it.
I want simplicity in my life, a life of happiness. Experimenting doesn't come to me naturally so I'll leave others to that. However I'd disagree with the notion that SJs don't entertain the complexity of life. It's all about the comfort zone. Most people live based on comfort zones.