Suggestion: Buff towers

The buff towers (Herb Witch, Irish Pub) should have a higher buff value for towers of their own element. A Nature tower in buff range of a Herb Witch should get 20% speed instead of 10%. An Metropolis tower in range of an Irish Pub should get 20% damage instead of 10%.

^Great idea. Would certainly give those people who limit themselves to one element more of a chance winning the game.