I have a few (I'll list the text along with a TLDR):
"No person shall be required to perform any sort of national service, be it civil or military, during a time of peace or of war." Bans the draft
"No educational institution receiving funding from the State shall restrict the right of students to the freedoms of speech, press, assembly, or religion, so long as they do not substantially interfere with the operation of the institutition." Established freedom of speech in schools
"Electoral districts shall be contiguous and compact, shall take no factors, including voting trends or the demographics of the area into account, and shall not be drawn nor approved by elected officials." Abolishes gerrymandering
"The freedom of movement in public areas shall not be restricted, except during times of emergency." Abolishes curfew laws
"All jurisdictions under the administration of the United States shall be permitted to elect the President through a nationwide popular vote." Abolishes the Electoral College and gives territories a say for President
"Jurisdictions under the administration of the United States that are not part of any state, including but not limited to, territories, districts, and commonwealths, shall receive representatives in the House of Representatives proportionate to population, and two Senators if the population is not less than one-fourth that of the least populous State." Gives territories/DC representation in Congress
Something about campaign finance but I can't come up with the exact words
"Any citizen of the United States who has resided in the country for at least fourteen years shall be eligible for election to the Presidency." Abolishes the "natural born citizen" clause
"Congress or the President shall independently have the power to call referendums." Establishes more direct democracy
"Justices of the Supreme Court shall serve no more than ten years." Abolishes lifetime tenure on SCOTUS
There are some important issues to me, such as trade and healthcare, that I feel should be better left to law instead of the constitution.
You got an amazing set
Yeah, this is amazing.
I'd take that, and add:
Give DC home rule
End citizens United
End the 2nd amendment
Give the right to organize, effectively repealing Taft-Hartley
Make election day a federal holiday, ban voter ID laws, and enforce 7 days early voting in every state
Replace the Senate with a proportional body
Establish MMP for the House
I have a laundry list that could keep going, but as MB said, some things are better off as law rather than as part of the constitution.