Can we talk about Vladimir?
The vampire is in a worse spot than most of rylais old abusers like
and 
This is probably because with the mage update and patches afterwards were focused on making him a mage and soon afterwards his 2 favorite AP items
got nerfed.
So how we fix him is we either need to adjust his healing and scaling based on the changes to his AP, or we need him to focus tank builds again.