The constitution being amended anymore is pretty much a pipe dream.
So let's take it to the next level. If you could re-write it, from scratch, what would you include, what would you ditch?
1. No electoral college, it was a dumb idea from the beginning, really, and was immediately castrated right out of the gate anyway, when the individual states realized how it could benefit them.
2. Implement an instant runoff or similar election system at the national level, that all states would have to use for local elections as well.
3. Go back to having the pres and VP elected separately. I know why this was changed, and it was a dumb idea.
4. All federal elected offices have a term limit of 12 years (6 terms in the house, 2 terms in the senate, 3 terms as pres). One could theoretically serve up to 36 years combined, max. SCOTUS appointments are limited to 12 years as well.
5. A federal, non partisan committee would be required to approve state districting for all elections. Districting would be by some simple rules and would mostly be done by a simple algorithm.
What I'd LIKE to see, but would really never happen, is that each state must be assigned an even number of seats in the House. Half the seats, and one senate seat from each state, would then be appointed by lottery. It would be a completely random draft of eligible citizens.
This would be true representative democracy. (It might suck, but we might take our civics a little more seriously if we might be called to serve.)
