Ah, warbirds has been basically dead since 2005...
The people in the arena are probably AI (atleast they used to count AI as part of the player count).
I once tried to convince HT on AGW to buy WB from IEN to give it a proper grave (its really like a starving and dying dog on the side of the road), and I tell you what; If WB stopped existing, the oldies would probably move on to here due to lack and the bread crumb effect (assuming alot here, might/might not happen).
Otherwise, the idea of allowing communities to make their own translations is a simple and very elegent idea which opens up the game to new people instantly. All it takes is one enthusiast with a bit of time on their hands and know-how and they can multiply their efforts to hundreds if not thousands of other people (althought admittedly not all at the same time).
People are always looking for ways to contribute and although I think shoving the skin, map and sound job on players is criminal, this certainly is not.