According to Amazon review here are his (Mark Levin, conservative talk radio person) proposals:
1. Term limits, including for justices.
Sure, why not start out with the one everyone agrees with.
2. Repealing Amendment 17 and returning the election of senators to state legislatures
Here's another meh one. At least everyone can agree with it.
3. A congressional supermajority to override Supreme Court decisions (overruling what could be a stacked court)
This is where he starts to go off the rails into conservative uptopianism. This would be just awful. If you don't want a stacked court don't confirm the justices.
4. Spending limit based on GDP
Awful idea. WWII wants it's financing back.
5. Taxation capped at 15%
A worse idea than #4 if possible.
6. Limiting the commerce clause, and strengthening private property rights
Sigh...
7. Power of states to override a federal statute by a three-fifths vote.
Hmm, I remember something else about states rights and "three fifths" in American history.