I’ve seen some pretty cool art on pickguards - truly unique and interesting, and easily reversed if you have the art on a spare. Of course, changing guards, knobs, jingle bobs hanging from the headstock, scarfs, etc. I’ve seen all kinds of cool stuff. Nothing wrong with putting fake wear on, if that’s your thing; but I agree it’s far from unique at this point.
I’m always reminded of a friend’s dad who was a boot and saddle maker I worked for during summers as a kid: He had contracts with some swanky buyers in Aspen, Jackson Hole, and other places where “Cowboy” was the kitsch. He would pull out this mini-Rangers bat that he had driven nails, staples, and all kinds of crap into - looked like a torture device. Every time he’d whack my hard work with it, he’d laugh, “there’s another 5 bucks…”. Never saddles, chaps, anything real cattlemen and cowboys used; just fashion stuff. Lost him in a car accident 10 years ago, but I think of Buddy all the time when I see stuff with fake wear. That was the 90s, so the trend of buying stuff that was already torn up was pretty new, I think - at least it was in rural Texas!