Well that isen't bad at all.
This is my idea..
Start off in a harbos first person. They click on a boat with a sign above it.
Then there opens a interface with rooms available and server and stuff..
Once in a room they can chose a team (2 colors or country's) And also the possition they want.
Well and like u say when we get some more player we put submarine's and aircraft's into the game.