I don't know how it would be implemented but I think it would be awesome to see an armored train mission. Maybe one side starts out inside the train and the train is haulted because a part of the track is destroyed and the other team attacks the train in an ambush. There could be firing holes from inside the train and the train could have cannons you could enter sort of like a tank. You could leave the train and walk around inside the train as well.
I'm not sure how the attackers would capture the train seeing as how the enemy spawns inside of it. Maybe the attackers would have to plant satchels at certain spots which would stop the enemy from spawning at that area and the attackers can get on the train.
The defenders would have to hold the destroyed part of the tracks to simulate guys hastly repairing the tracks or the defenders would have to hold on for a certain amount of time.
I'm not sure how the attackers would capture the train seeing as how the enemy spawns inside of it. Maybe the attackers would have to plant satchels at certain spots which would stop the enemy from spawning at that area and the attackers can get on the train.
The defenders would have to hold the destroyed part of the tracks to simulate guys hastly repairing the tracks or the defenders would have to hold on for a certain amount of time.