If this game was promoted AT ALL, numbers would sky rocket. There are two main websites that are basically the official database of all computer games in the world. This game was not registered on either of them. I had to add this game to those websites myself just to be able to stream the game and list the name of the game in those streams. Basically, if you weren't playing this game twenty years ago, you don't know it exists. This game and this website don't even pop up on google. Some serious SEO work is needed. And that won't happen unless someone is given access to the website to work on SEO. I don't think Bill realizes how much money this game can still make for him if he just took the time to do all the FREE things that could help get people into the game.
That's an open ended question...
What warbirds needs more than anything else is numbers, people, players.
The game maintains a small regular USA participation but that is it unfortunately.
If you log on at what should be peak European times there is literally nobody on at all.
With so much free to play content out there, they no doubt are going to struggle to get new people to sign up for a monthly subscription based format.