The goals should be traction, clearance and vehicle recovery.
Traction is easy. Anti Spin Diff, aggressive Mud and Snow tire. There's not much else necessary or availble.
Clearance will be achieved with a lift AND/OR using a high profile or no nerf bar. Gotta get the middle up. How much up depends on the terrain and the driver.
Recovery is tow hooks in the front and at least a D-ring for the hitch in the rear, skids for the guts (which ironically lower the clearance some a lot of times), and being prepared (straps and winch if you think you're gonna need it).