Bodily autonomy as a right (no banning abortions, gender transitioning, bionics)
Separation of Church and State as the actual law of the land
Add federal referendums, all constitutional amendments are referendums (but amendments still require 75% of the population)
Districts are now no bigger than 50,000 people and they all get a representitive, and all the recognized Amerindian tribes also get their own reps (an agreement was made with the Cherokee for them to get one but it was never fulfilled)
2nd Amendment replaced with something that directly allows federal government to regulate but not ban firearms.