Just an idea for Vladimir, what about making pool damage scale with AP instead of just health?
Right now, Vladimir is getting buffs (yay)
However, Riot is trying to make sure that Tank Vladimir never comes back. Tank Vladimir was basically Tank Ekko with less mobility and CC for better waveclear, more teamfight potential, and a better late game. It was an awful thing to play against, since he will never die while still chunking your carries for 50% of their HP.
Currently, Vladimir's W damage scales with 2.5% of his bonus health in damage per half second. It has an innate AP ratio of 14% due to his passive, but I believe that adding a visible, decent AP ratio to Vladimir's W, Period Sanguine Pool, would help his AP build slightly without making his Tank Build busted. I think a 20% AP ratio for a half second would be nice, but if you have to you can nerf the Bonus Health ratio a bit.
Thanks for reading this!