Expand SCOTUS significantly.
Aggressively prosecute any and every government employee who violated anyones civil rights during this administration.
Impeach Roberts and Thomas.
Repeal the Big Ugly Bill
Repeal Citizens United
Ban gerrymandering with severe personal criminal penalties for violators, remedies for repeat violations (redrawn by a federal commission) and require immediate redrawing of all noncompliant district maps.
Enshrine important Constitutional protections using Congressional legislation, preventing courts from further corrupting Constitution through bad faith re-interpretation.
Anti-corruption Laws. Require public servants to completely divest themselves of stock private interests while dramatically improving base pay. Ban trading and investments by anyone serving, whether elected or appointed.
95% income tax rate for rental income from low-density residential property after $250k

I could probably keep going. But those are big ones currently missing.