In a recent update they added an “Orignal+” medal setting for Halo 3. It’s basically meant to be more faithful to the game’s artstyle than the Unified Medals, while still offering a similar amount of visual feedback.
I’m suggesting that the same thing be added to Halo 2. It too let’s you choose between original and unified medals, but the original medals don’t offer nearly as much visual feedback. Only a couple would need to be added. Stuff like headshot, assist, kill from the grave, supercombine, etc.