I may have a solution to fix Fizz without making him too unviable
While me coming from DoTA and HoN see no problem with the concept of untargetability (think Puck and Bubbles), my friends who play quite high-tier ranked games have told me that his Playful Trickster is an issue due to it having too much.
You have the big AoE, the slow, the massive damage, and then short cool-down towards later levels. So here is what I was thinking, that can be done to add more skill to him while not taking away too much from him.
Playful: Mana Cost reduced from 90 / 100 / 110 / 120 / 130 to 45 / 50 / 55 / 60 / 65 Base Damage reduced from 70 / 120 / 170 / 220 / 270 (+0.75 AP) to 45 / 60 / 85 / 110 / 145 (+0.4 AP) Cool-Down increased from 16 / 14 / 12 / 10 / 8 to 18 / 16 / 14 / 12 / 10 Damage radius increased from 330 to 350
Trickster: Second activation now costs mana equivalent to 45 / 50 / 55 / 60 / 65 Damage radius reduced from 270 to 250
I believe with the aforementioned changes, now you have to pick between damage and utility. Also Trickster (which does more burst) becomes harder to hit.
What say you guys?