Riot seems to want to make the Cunning tree attractive for damage-oriented champions, unlike other past utility trees. The problem is that they are doing that in the wrong way. Ferocity should be the only tree that increases your damage, while Cunning should offer utility only. However, it doesn't need to be just team-wide utility like the other past utility trees. It could offer offensive utility too. What I mean with offensive utility? Well, look at Dangerous Game. This mastery makes you better in combat but does not directly increase your damage. Instead, it allows you to survive that bit of leftover damage from things like Ignite or Deathfire Touch, once you kill an enemy. If other masteries were like this, Cunning would be a healthier tree, but damage oriented champions would still want it.
There are lots of ways to make you better in combat without directly increasing your damage. For example, giving more movement speed, refreshing/reducing your cooldowns after kills/assists, increasing your self sustain, giving you a shield (that only works on you), etc.