I think that if the Good Guys replace Nazi America with something new, they should engineer a new economic system where everybody's survival is guaranteed. If you have basic but genuine shelter, food, utilities, and so forth to rely upon, you can go out to protest or strike without worrying much about your wellbeing.
The current economy might as well be willfully designed to keep an economic boot on our necks. We can't afford the time, risk, or afford travel to do what is right. We should make money not used for survival, instead making it solely for buying luxury goods - a fancy car that isn't government issue, meals that aren't Generic Corn Flakes #1, and so forth.
Capitalism is good for supplying the demand for things that align with a person's hobbies and interests, but is utterly worthless when it comes to survival. We should fix that, by ensuring that billionaires cannot exist, and use their freed capital to fund a genuine UBI for all.
I think "Roosevelt Party" has potential. You can make two mascots for the ads, one being Theodore and the Franklin, each designed to appeal to the right or left among Americans. Theodore, for example, using guns to hunt down moose, advocating for national parks and peace with Canada.
Also, someone can commission an Epic Rap Battle between the two, who then dunk on Trump and Elon.