Yeah I think any one of those communities could come back. Free Castles died out once and I just started being the only one hosting it, and as I started hosting it I asked any player that joined even if they were just starting out, I would ask them "hey ____ want to join DW? Make your name x-DW-x)Name _ here( " and they would join. Eventually enough of these guys would fill up the game slot alone in my games. Eventually at least 80% of the USWest players were now Dark Warrior members and the map began getting hosted more often.
So IMO any other player could do the same thing with x-DW-x)Name here( as their account name. Join the clan now if you have not yet! DW has been around since 2001 and one the longest lasting and most loyal the the game. We let any new player in because we love Warcraft 2 and forever the Dark Warriors will be dedicated to the game.