Rankings and your Level

Whats the point of ranking up if you dont get rewarded for achieving say a level 10, 20, 30 etc. many games reward you for reaching the next level in experience points. i feel and many others would agree that the game should reward the players for every level they achieve, say with resources, troops or special perks etc. i feel this would also show the community that the admins care about the leveling up process and care about its members commitment to the game