As I see on the custom servers the FFA is one of the most popular game modes.
I was thinking about creating a ranked mode for the nomad FFA which could be the fairest.
For sure ranked FFA could give us more sense and life playing this mode and additional opportunity to play different ranks than 1v1.
Battle royal games like Apex show that such a ranking system for the FFA game mode is possible and goes well. Personally, I would be pleased to see that game mode.