I think an interesting tweak would be to make the War system turn based. Right now as it stands its basically the first nation or alliance to attack or blitz wins for the most part. With a turn based war system it could employ more strategy then OMG STAY UP TILL MIDNIGHT AND ATTACK 4 TIMES.
Or possibly put attacks on a timer, instead of 2 attacks per day you can do 1 attack every 4 hours.
I think TE is the place to try out new war methods and could add an interesting feel.
