Don't get hung up on the fact that it's a FATE. The point of suggesting a FATE is twofold:

- It's open-world content, so you're not simply participating with a core group of people. You're interacting with other members of the community. This is the only thing that separates it from instanced content.
- With the right tuning, a FATE doesn't need to be a mindless assault. Requiring certain conditions be met for Gold status would add a breath of fresh air to the experience. I don't know how difficult the coding for it would be, but they could tailor based on how many participating parties there are. It could be where groups have to communicate with each other to coordinate a win. It'd really be a different experience than the kind of FATEs players do while leveling up.