I just played a server yesterday from 1.61, some of the mods where awsome.
They had a tank that shot a plane that you could fly around but if you die or crash, you just go back to the tank.
They had another tank where when you got out, you where about 20 feet away and 100 feet in the air.
Had it so that if you where sniper, you could take out binoculars and when you clicked on them, it dropped an invisible bomb right in front of you, to make it even more strange, whatever weapon you used last is what it says the person was killed with...