If people want credit for their goop builds, like myself, add a gun similar to the existing sticker gun, that makes a watermark on your build, that only you have. So you have proof of ownership. The sticker would save on your builds, and if anyone else tried to use your sticker gun, they would only have access to their sticker. The sticker could just be your nametag even.
Also, a custom icon sticker gun so we could design and place custom stickers! With restrictions, of course.