War desertion punishment - Desertion mark

[JonahTheBard]

This thread is much more current, please continue the discussion here:

Penalize or FIX war deserters (Players who leave during War or after Matchmaking)

My biggest annoyance in the game is players leaving the alliance before the war is over without using their attacks. This could be discouraged by penalizing this behaviour, for example by not allowing them to join the next three wars in their next alliance. Or the option to leave the alliance could be disabled after matchmaking until all six flags are used.