I'm not sure that it would actually make anything easier. Instead of having a whole bunch of laws on the books, you are left with a whole bunch of laws that you can't count on existing for more than 5 years. Sounds rather unstable, especially for the economy. I'm not saying it's good to have a million laws, but there is something to be said for stability. People would have to relearn all the laws every 5 years, and every 5 years they could change.

Simplify the laws? Sure. Make resources that summarize and organize the laws for the average person? Absolutely. Perhaps come up with some review process for the laws like Raharu Haruha came up with? That might be good too. But a sunset on all laws seems too chaotic. Laws are meant to give stability and predictability to society.

__________________
True knowledge exists in being aware of what you don't know.