Some ideas to help and encourage more war participation...
1.make separate war army including: spells and cc troops, these would be donated same place as defence troops, but on attack day not prep day.
2.heros should be available to attack in war if they are upgrading(they are available to defend) doesn't make sense they aren't available.
3.spells should be available if factory is being upgraded.
These would elimates people's excuse saying "but i don't have time to make an army" and "no point in attacking i have no spells or heros".
wars are separate to normal attacking and some tweaks need doing to help balance things.
This idea is for wars only.
Any input please post..

