Letsie,
We are adding some war levels between 3 and 7.
The shift will add war levels, up to 24 and later up to 30.
It will make the difference between war levels a little smaller.
The only thing it does, is offering players the opportunity to earn more gold coins as awards for moving up the war levels and makes it easier to build a small empire.
We are trying to make the difficulty level to grow more gradually with no huge increases.