I'm bumping this so I won't forget it. We need to make this event happen at some point.
You know me, there isn't an event out there I won't volunteer to run if needed lol.
I like the Mark idea, that could work. Another option would be that every time someone beats the FG and posts they are allowed to ban one or more cards against it by other players. That would give extra incentive to beat them sooner since the longer you wait the harder it'll become to tackle it. It might also eliminate the need to include a speed component to scoring since the card ban will make it progressively harder and harder to beat the FG as more people beat it.