My big 4:
1) Rollback pretty much every Trump executive order. That should be done January 20 by 6 PM eastern time.
2) Huge corps/billionaires that profited on the pandemic can pay a nice big tax surcharge.
3) Comprehensive healthcare reform. (This won't happen the industry will get too much money to a few of the blue dog senators, but I can hope)
4) End the "war on drugs", from federal agencies.