Increase Fizz's hop CD or Reduce Vlad's Pool CD
Can't see any reason why Fizz's E cooldown is substantially lower. Fizz has a much easier time to itemise cooldown reduction. Both as AD and AP, he can itemise better than Vlad for CD, because he benefits from all the stats. Not only that, he can hop over walls and escape. He even has a dash. A small one, but a dash nonetheless.
Make him pay for his mobility. No one likes playing against that stupid fish.
Vladimir has no use for things like Athenes and Morello as he has no mana. He has no AD scalings, so AD CD items are useless.
Normally, the only CD I end up getting is on Will of The Ancients. You removed DFG, which provided him with CD and lots of health. It was a niche item for when having more rotations of spells in fights was key to surviving without having to burn Pool or Hourglass, especially when carries needed to be exploded. I only get Spirit Visage when they have more than one AP champ that isn't a support or I'm facing one in lane. The pool health costs are horrible when near full health and you need to avoid lots of CC pre-fights.
Make Fizz's E cooldown higher than it is, especially at max level. 8 seconds without CDR for a mini Zhonyas that allows wall hops and can kill people is ludicrous. At least Vlad pays in health, crazy CD and you know exactly where he will be at the end of it.
are your core items. Every game you should end you build with these 3. Visage can be built later, if MR isnt needed early, or if you're fed and can get Rab's or hourglass quick.