Random Thoughts on Kha'Zix
Q - Isolation range slightly increased. Evolved - Isolation range from passive is now reduced on slowed enemies. Increased effectiveness when slowed by own abilities.
W - Slow reduced to a 1.5s duration Evovled - No longer spreads the spikes. instead can now store up to 3 charges that can be used on a 3s cooldown. Repeated attacks within 5 seconds deal 75% reduced damage. Can be used while leaping.
E - Damage removed. Mana cost removed. Evolved - Upon landing, now creates a small cloud of smoke for .5 seconds, disrupting all isolation ranges within. (Land between targets to get a quick isolated Q in.)
R - Unchanged Evolved - Using R leaves a cloud of smoke for .5 seconds, disrupting all isolation ranges within. (Smaller radius than E.)
What this does is allow him to control his isolation more. He has tools to disrupt this isolation. Although he lost damage on his E, that should easily be made up from stronger Q's.
