PLEASE READ ALL OF THIS TO SEE MY SOLUTION TO THIS ISSUE. LET ME SEE WHAT YOU ALL THINK.
They should implement an Auto-Reward system based on the number of times a member participated in the war. For example if you participated in every fight, you automatically get a Legendary gift pack. If you missed one, you get a smaller reward and so on. Bonus rewards should be given out based on what position your group placed in the war. The winning group should give all participants something (I'm not really quiet sure what it would be yet), the runner-ups should get a lesser reward and so on. The Leader of the winning group should get a pack better than a Legendary pack known as a 'God Pack'. I believe this system would make group participation in the wars increase a bit and it would make everyone a bit more happy as well. I always feel terrible when I cannot reward my group members for the work they put in and this would solve the problem.