As it is, Gold threat is too polluted. Add a new threat above Gold, like Platinum, for example. I might be assuming too much here but each and every player should technically have a hidden ELO. Automatically make the top 10% of players with the highest ELO Platinum and make a server only accessible to those players.
This segregrates the top tier players and let's them play with other similarly skilled players while preventing them from completely destroying the average player.
Dethreating would be a possible danger here but seeing as only the top 10% of players would get this new threat, their ELO would also be extremely high. Again, not sure if they actually have the tools to monitor this but hopefully they do, but LO could just monitor and see if anyone was losing a lot of ELO intentionally in a certain time span.