Gmod add-ons are such a mess in general, just finding them is a pain in the ass and once you do track down a stable download most of them forget up your game... But then like blockland you can just delete it out of your add-ons folder, fixing everything.
You left out a part there, bub.
The only useful thing I've seen come out of wiremod was a target-based spawnkilling machine for mingebags.