Converting a travel trailer to all 120/240 volt electric

Just curious why you would do that? Biggest issue would be replacing the lighting with 120v. It wouldn't be a code violation per se to run more romex, but code does limit you to 6 branch circuits in an RV. Getting the wiring through the walls would be a nightmare.

Would you abandon propane too and make everything electric? The fridge and the HW heater already run on 120v in addition to propane, but the fridge requires 12v for its control circuit.