Good idea! For years many MX and Enduro bikes came stock with these little "quick change" gadgets! Very handy for racers doing ISDE style tire changes. (3 min for total tube/tire change) Don't even have to take your gloves off to pull the axle.
Next you'll be rigging cables for the shift and brake levers to keep them from being yanked off or bent into a U by a root, rock or in a fall. Very handy too, easy to rig.
Maybe upgrade the rear disc guard to a true Alu "Shark Fin" style guard. The plastic ones break easy.
How about a front disc guard? These used to be very popular. Now, almost no one uses them. But just recently (after being gone 10 years) I'm seeing many of the US Super Cross guys using a plastic front disc guard again.
Protects not only the rotor but also the caliper and brake line. Front disc guard was one of my favorites on my race bikes. So many hairy crashes, never a bent rotor or damaged caliper.
My former DRZ-E .... pretty good desert bike ... not so good in the woods.