So multiplayer has been classified dead for several reasons, one of which is the plug-in differences between my mac, and the next guy's. The solution to this is easy. why not just make it so EV or EVO just ignores the plug-in file for multiplayer games, and all players must start one pilot solely for multiplayer. this pilot could not be used to play single player, and thus the plug-in problem is avoided.
Another is that it would quickly get boring with the first few people getting all the unique missions. Well, you can solve that by eliminating those missions. Have the universe locked into a TIME based system, where certain missions will be accessible, then there sucessors, and so on, then retaliation (from oponents), then they attack you, and you retreat, (and then you're right back where you started. If you had several such series for each race, you could easily have fun for a long time.
Another thing, would be to have EV more real time. for game purposes, say that 1 min = 1 day. when you log in, you go directly into the game, thus ALL ships you see are human controled, and thus, in some circumstances, more chalenging to fight, avoid, or deal with. Probably, the only ships that would be computer controlled would be the onboard fighters that other players launch.
Aside from the networking stuff, the only serious programming neccessary to enable a multiplayer system like this would be to increase the ships/system limit, say, to 64, or maybe even 128 ships.
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Zitchas