Checkpoints
There will be some checkpoints in the path of the tank that is being escorted. The team will be given a certain time limit to push the tank to the first checkpoint.
If they fail to do so and the time runs out, the position of the two teams will be swapped (the team trying to stop the escort will no escort with the same conditions applied)
If they manage to reach the checkpoint, extra time will be added which they can use to further push the tank to the next checkpoint and so on and so forth until they reach the end
Tank retreating
If the tank is not escorted and left alone for too long, the tank starts retracing it's path to the last checkpoint.
This ensures that when the teams are not balanced, the game will end quicker just like the tdm (when there is a 25 kill difference between teams)
what are those alternatives