I am certainly not a pvp'er but I think an easy solution to this would be to make a new medal and let everybody keep the old one that they have worked (hard or little) for. The value of things is always going to be in the heads of people and there is really nothing you can do to change that. Personally, I put little stock in it because I don't like pvp but I appreciate that it has a lot of value to people who do put time and effort into it. And of course that should be respected.
Virtually yours,
Zennaro