When we buy a new trailer, my wife has visions of what shelves and dividers she wants inside the cabinets. After she describes them, I build close to what she wants. All of my shelves have the weight carried by the floor, not the sides of cabinets because the cabinets are built very cheaply.
Our Class C went over 50,000 miles with my mods, first TT went 10,000 (sold at that point) and our current TT has gone 25,000 miles without anything coming loose.
I also remove some of the plywood panels that builders install to hid the plumbing, I redo to areas so that I get extra storage and still looks good.
I add a second LP tank and auto switch over regulaotr. I hate getting up in the middle of the night to change LP tanks.
One other thing we do is cut the bench seat plywood lids in half and mount them on hinges to make it easier to get stuff out of the seat. Some extra framing is required to keep the seats strong.
Bob & Dawn Married 34 years
2017 Viking 17RD
2011 Ford F150 3.5L Ecoboost 420 lb/ft
Retired