I am no expert either but I doubt that you will successfully overdide what FPSC MP is designed to do and the way in which MP is designed to function in V1.
Max 8 players are allowed and thats what you could achieve from any single game connection. No matter how many servers or single games you have going on anywhere they would be isolated - I dont see that there is any way you could integrate anything to let them join a single game. Thats not the way it works. You can change your MP script file so that it indicates a Max No of players - though I am not sure if the engine itself - i.e. the source code has the restriction of 8 players built in anyway (so it would overide above 8 players setting) as no one is privy to the source except Lee and perhaps some other TGC officials.
Furthermore FPSC MP is capped at 8 players so that gameplay is kept at a sensible figure to allow for fast paced gameplay. Increasing this figure would in any case reduce the speed of your game dramatically for every additional player who entered a game. Realistically the idea of more than 8 players is a non starter for 10.....
There are many other factors involved currently too - not least of all the small World Game Size of FPSC which would make the place very crowded, not to mention even with the current world size the more you fill it with world objects i.e. the more complex the content - The slower your game will be. This is not the Unreal engine and you will have to design your MP game with some sense of perspective.
Later versions - then who knows as undoubtedly there will be additions/upgrading of MP and perhaps the engine overall which may provide futher enhancement.
