I was somewhat disappointed when I found out that the glyphic pistols and shotguns were all BLAM BLAM instead of like PEW PEW or something.
I know it might be a bit of work to re-rig the sounds so that they fire differently based on weapon skin, but it would be really cool if the glyphic firearms didnt sound like they were using buckshot.
Also it would be very fitting, since I think all the other ground items you find around Metrica have zapping sounds.