Ok, on the issue connected houses to stations. I think a good method is as the following:
Add your rail to the main track, put an obsidian stopper just before it with a "hold for x" allowing the user to choose their destination in a given amount of time.
Now, the best way to make it resettable, is to make an SR latch using redstone. not too tricky. A few people on the server will know how to do it, if u dont know, ask, and im sure they can help. The output of the latch controls the track. (carry on, or switch).
It should be when you hit the button, the track switches off the main line.
To get the track switched back in the default position, you can just stick a pressure plate a few blocks, 5-10 (to compensate for lag)? before the cart reaches the obsidian to reset the latch. and so it puts the junction in the default state (along the main line) before you reach it.
Because we are using minecart mania, the carts simply pass over the pressure plate, it acts almost as a rail. So that makes it easier
Dont forget, all the main lines out of the spawn are ONE-WAY. we have /spawn to get back there. There may be a few private 2-way lines (single or double rail). If a collision occurs, man-up and go back to spawn.
More tips: If you find the obsidian is sending your cart the wrong way, force a direction by putting a sign next to it with the direction, ie "North" or "south".
And PLEASE, if u leave a cart on the rail, pick it up!
