Lower health armadas in war have a difficult time staying alive long enough to play. This will drive away pirates and war participants. My suggestion is place a limit on number of times an armada can die within 1 hour. If you set it to 3 they would have up to 15 minutes to attack without threat of being killed. Require them to fight an armada in a lower tier except for the E's. The more who enjoy the war the more will play. Everyone wins.