What's wrong with the everyone going greedy for it? Everyone trying to get the most stars possible and putting up the best defense seems to me as an effective approach at war.
Players can get jealous about it or they can complain such as doing a 3 star gowipe but gets beaten by a level 2 balloonian.
January 20th, 2015
Yamaduki
Heroic attack and heroic defense titles. Its a broken version of what you want but there you go.