My proposal is as follows:
1. Legislature to meet only two months each year
2. Require 2/3 vote to pass new laws
3. All existing laws to be sunsetted and reconsidered under the 2/3 rule
4. All regulations must be approved by Congress by 2/3 vote
The moral basis for this proposal is:
1. Freedom is our most precious value
2. Every law is essentially a restriction on our personal freedom
3. However, to coexist peacefully in a society a certain amount of rules are necessary
4. There has to be general (more than simple majority) agreement to implement those rules, hence the 2/3 threshold.
Add to your list the Repeal of the 17th Amendment. That would make it much harder for either party to pass frivolous laws, by preventing an election of a super-majority majority Senate.