I added an Access Agri-Cover and Bed Mat and I'm thinking of some molded (to fit the body contour) mud flaps to protect the lower body from debri.
I'm also thinking of wheel well bright moldings and it looks like they are already drilled (with screws) to make it an easy installation.
Possibly these moldings are attached with some sort of clips. I seem to have read that some place.
I was pleasantly surprised to see that the oil drain plug is in the proper place to make draining the oil quite easy.
The oil filter should be a "no brainer" also.
Anyway just some thoughts on possible add-ons.