I mostly really like the new Vlad, but crimson rush could use some work to feel good.
If you are going to make the passive on his 3rd Q such an important part of his gameplay, and keep it as telegraphed as it is, Vlad needs to be straight exploding with movespeed for the couple seconds it is up. The tiny amount he gets does not get the job done at all.
Think like how Ryze passive movespeed works, that guy goes FAST when his window of power is up. It feels good. Vlad's on the other hand is barely noticeable.
Not trying to compare Ryze and Vlad for any real balance purposes, just using Ryze as an example of a similar short term and predictable buff that actually feels strong as opposed to Vlads.