Here we go Riot. Ima do some of your work for you.
[CENTER]"How to balance Vladimir."
Increase the Range and Cooldown on his Q (Transfuse) ability.
-Reasoning: Almost all other Casters out their have pokes with astronomically larger ranges than his Q, however, they ALSO have a Longer (<--- Edited) cooldown. This will lower his sustain, but also help him poke like he should be able to as well.
Remove the Movement Speed Buff to W (Sanguine Pool).
-Reasoning: Really, there is no need to have this here in the first place. If removed, it would have to be used in a much more tactical way, because if you pop it to chase someone, you had better be sure you will catch them, or it's Bye bye 20% of your Current life and your main escape move for 20 seconds.
RE-Increase the health cost on his E (Tides of Blood), and Decrease the amount of time it takes for stacks to run out.
-Reasoning: The health cost on this spell is a joke compared to how much damage it does. It needs to be much harder of a choice to keep your stacks in it, as it will be a constant, noticeable drain on your health. Also, compared to the extended range on his Q, he would be forced to get in close to pop an E, therefore putting himself in potential danger.
Decrease the Area of Effect on his R (Hemoplague), and drop the damage percentage to 10%.
-Reasoning: Hemoplague is one of the best ults in the game for the simple reason that it increases all incoming damage from ALL SOURCES by a whopping 15%. Couple this with a few other AoE Ults and you have yourself one dead enemy team. With the decreased AoE, the player must decide who is the more important target to take the increased damage. Dropping the Damage Percentage to 10% is also quite nessisary. A level 6 Vladimir can still be a huge help to his team when facing a level 18 Team. It doesn't matter what level you are, 15% damage is a staggering amount that easily turns many team fights.
And lastly, remake his passive all together.
-Reasoning: Simply put, Vladimir is a great ,"Comeback Kid". This is largely due to the fact that when purchasing items, he gets much more gold value out of the item, as it may give him extra life that comes from nowhere for his AP (Or visa versa, but who goes HP Vlad anyway... >.>)
Example: If you were to buy a Rabadon's Deathcap and nothing else on him, That would give him a total of 140 AP Plus the extra 30% bonus. In total, he would get 182 AP. Due to his passive, he would also get 254.8 HP. That is more the equivalent of a Permanent Elixir of Fortitude at level 18. (Minus the attack damage of course.) Assuming there is around 30 minutes left in the game, that is equal to around 1875 BONUS GOLD that comes from NOWHERE! (Assuming you would buy a Fort Pot Every 4 minutes for the rest of the game.) Keep in mind, this is JUST for a Deathcap. This does not include items like Rylai's, Abyssal Scepter, Hourglass, Etc. Not to mention, Deathcap's bonus will effect those too, giving EVEN BIGGER gold value to already good-value items.
[CENTER]-------- Consider This: ---------[/CENTER]
Consider making it something like Ahri's Passive. After several spell casts, he gets increased spell vamp on one of his abilities. It fit's his style and serves a useful purpose as well.
I'm not going to say this is the BEST way to balance Vladimir, because I don't have all of the numbers, however from what I have seen, these things would make a good bit of difference without destroying him as a champion.[/CENTER]
[EDIT:] And for the record, I just want to say that out of the 600ish Games I've played, Nearly half of those were of Vladimir (Post Nerf-buff-nerf) I enjoy playing with him, and I will continue to do so, but I get sick and tired of being called "OP" when I have the experience under my belt to know wtf I'm doing with him.