there is nothing wrong with making and displaying a personal warning sticker yourself.
that way you wont have to repaint or redo the inside walls. really, if they put a warning sticker for everything a person thinks may go wrong or cause a problem, the chassis would be overweight.
what some are looking for is someone else to blame for their own overlooked problem.
the key is a safety walk around. it takes a few minutes, but there is no substitute for a good final look. just give it a good look. ive found doors with one side latched, safety chains on the tow vehicle hooked wrong, any number of things that may have caused a problem.
personal responsibility should not take a back seat to warning labels.