The only re-labeling I do is on end labels that have completely been demolished or are missing. For instance you'll come across a lot of Atari 2600 games that are missing their end labels. I just use a P-touch labeler and make a new one. I'm not trying to replace the original, I just want to know what the game is. Same goes for a couple NES games I have where the end label area has been worn away completely. Torn, damaged, faded, etc. no big deal. Can always be replaced with a better condition cartridge and then the older copy can be sold off.