The stock lockers make it easy and cost free for a buyer, but they are not perfect. There are some that prefer your setup because it allows them to install aftermarket lockers that may be stronger or faster to engage. If yours is a solid truck with good maintenance records on hand, someone will grab it for sure.
What's the story with the body side moldings? Did you add those? The "Four Wheel Drive" moldings tend to be on 80 series trucks from outside the US.
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock