Official Factions are dying because disco is dying, and the proposed "solutions" will only make disco die faster.
Nothing will stop disco from dying if you don't work on this one thing:
Keep more people actively playing on the server, stop them from ceasing to play out of frustration and boredom.
Mandatory ingame time requirements for OFs are far from being the only way to achieve more ingame activity.
There are more than 20 strategies to help achieve it, involving new player experience, letting more people contribute to development of mod and community, keeping people from harming other people's game experience so much, encouraging OFs and people in general to be more welcoming of new blood, changing rules and mod layout to encourage more player to player interactions.
All of these strategies have been proposed and repeated by me and other people ad nauseam for years and years, but are ignored again and again without providing a single valid argument against them, with excuses like "game is dying because it's old".
The sad truth is that the people who hog the power to make these changes would rather let the ship sink with them and their friends still at the helm, than let "outsiders" contribute in ways that would make the powers that be feel less important.
Letting forum RP count as "game activity" will only make that problem worse by allowing this kind of people to stay in control without even playing the game.