Rengar Balance
I've been playing Rengar a lot lately, and i did so too in the past. When they reworked his q into that area cast i dropped him since it didnt have the same charm, when they reverted that change, along with changing how his passive and ult interacted i fell in love again and started playing him a lot.
Changing how ferocity worked on his abilities + movement speed is great though i feel like his W need the heal + armor/mr that he had before, the "take away cc" at 5 ferocity is great, i love it, but they way he heals is somewhat uncontrollable, tbh i rather have it reverted into the heal+ armor/mr keeping the cc nullifier at 5 ferocity, because there are fights where your health goes too low too fast and even if you use double w you still dont heal as much because griveous wounds/ignite, the armor/mr is better at later stages, and it would heal even more with lifesteal because of the damage you're negating with the armor. It would also help clearing the jungle camps in a more manageable way since you could heal anywhere.