Here are two mods that I will be doing next spring that I would like to share in case you are making plans now.
The first mod I used years ago in our little Boler trailer. Since our daughter was camping with us we needed privacy between the front where she slept and the rear where we slept, dressed, etc. Mid point along the inside was the vertical wall of a closet. Here is where I attached a normally mounted horizontal roller window blind, in the vertical position. It was a simple matter of pulling out the blind and hooking it across the trailer to the countertop. I had 3 places where it could be hooked (forward, midpoint and rear) this change the size of the area that was being used. I plan on doing the same in the cargo so that there is some privacy if someone else needs to use the potty or change. All that is need is a roller blind roughly the length of the inside height of your trailer and the availability of a vertical space about 3 inches wide on your wall to mount it. As in the Boler it does not have pull all the way across to a completely flat wall. It can hook to a counter which still gives you enough room to dress behind.
My other plan is to mount my RV battery on a removable 2 inch receiver tray on the tongue. Traveling every day on the road is not a problem to keep the battery charged, however when I reach a destination say like Las Vegas, why not be able to easily remove the battery from the cargo and plug it into the vehicles 2 inch receiver. This way by connecting it to the trailer plug on the vehicle I can charge it as we drive around the city to see the sights. Since we are only occasional campers we will be using our portable (thermo-electric 12V cooler) Koolatron as our main fridge. I will move the Koolatron from the trailer to the vehicle for the drive and take advantage of the vehicle’s AC to lower the temp inside the cooler. Leaving it in a hot trailer all day is just not how these coolers work well. This also lets us have cold drinks at hand and a place to put groceries to keep cool so we don’t have to rush back to the trailer. The Koolatron would run off of the vehicle while out and about but could be plugged into the RV battery if the vehicle was to be left many hours. This plan also allows me to use the RV battery when I don’t have my trailer on a Search and Rescue. I can operate my radios, area lights and Koolatron without have to worry about the vehicle battery going dead.