For instance, I know people want more short-blade varieties. What if i brought a stiletto into Joe Lord of War guy and he could change the name and short description to match an icepick that i really want to de-ice my frozen kitchette? Maybe there is an immersion-breaking line pointing to what the original item is in the description for balance sake. As long as the new weapon doesn't mimic any existing weapons.
This way, instead of creating all new weapons all staff has to do is read a description, make sure it doesn't match any other weapons someone could buy IG and then approve it. Combat messaging might be a concern. I don't know. I searched the forum and couldn't find anything similar to this before positng, but i'd be surprised if this hasn't come up before somehow, somewhere.