What do the official forums and the fan forums want?

I initially created the current Facebook-based league on the Wargaming.net platform because, in reality, almost all games are played on that version. However, this might not suit everyone, and over the past six months, Wargaming.net has somewhat faded, while SOD (Shades of Darkness) has gained momentum (favorites, newcomers, sk2tv, etc.). We need to monitor market trends and run the league on the platform that is in demand.
Regarding the regulations: as Pete said, we should combine the OFB (group stage) and FB (playoffs), with only the player who finishes in 1st place advancing to the next FB (!), and all other players being selected from scratch. There should be no overlap, meaning players from the current FB can participate in the selection process.
The league should be held once a year or less frequently.