This is a specialized world. Why would Stardock want to combine medal ideas with graphics? Let the best idea people forward the best ideas, and the best graphics people submit new graphics. Demanding both at once may get you neither at top quality.
I'm an idea man, so let me present a few ideas.
1) Champion of the Light - Player holds a position in the top 25 "Good Players"
1a) Defender of the Light - Player holds a position between 26 and 100 among Good Players
2) Secretary of the United Planets - Player holds a position in the top 25 "Neutral Players"
2a) United Planets Special Envoy - Player holds a position between 26 and 100 among Neutral Players
3) Chief of Secret Police - Player holds a position in the top 25 "Evil Players"
3a) Secret Police Interrogator - Player holds a position between 26 and 100 among Evil players.
4) Logistics Champion - Player holds a position in the top 25 of either Huge or Gigantic maps overall standings.
4a) Logistics Expert - Player holds a position between 26 and 100 on overall standings for Huge or Gigantic maps, and is not currently rated as Logistics Champion.
5) Strategic Champion - Player holds a position in the top 25 of either Medium or Large maps overall standings.
5a) Strategic Expert - Player holds a position between 26 and 100 on overall standings for Medium or Large maps, and is not currently rated as Strategic Champion.
6) Tactical Champion - Player holds a position in the top 25 of either Tiny or Small maps overall standings.
6a) Tactical Expert - Player holds a position between 26 and 100 on overall standings for Tiny or Small maps, and is not currently rated as Tactical Champion.
7) Galactic Medal of Valor - Player has submitted at least ten wins apiece for all six map sizes.
8) Political Ribbon - Player has submitted at least three wins apiece utilizing all standard political parties. (Perhaps a second tier of the award for doing this in Maso games).
9) Campaign Ribbon - Player has submitted wins for all of the ten new scenarios with Metaverse tracking. (Perhaps a second tier of the award for doing this in Maso games).
10) Victory Ribbon - Player has submitted at least ten wins apiece for each type of victory condition.
There, a few ideas to chew over.

I have even more, although some of my ideas would require additional variables to be tracked.
- Sirian