Vlad's hotfix won't fix his issues.

The majority of his failure comes from how clunky his kit is. Specifically his Q and W interactions.

Any time you'd get a rewarding empowered Q, you die, even if you get it off, before the particle gets to you.

If you try to Q, then W, W cancels the Q damage.

If you Q, wait for the damage, then W, you do not receive the heal.

If you W, then try to Q as you're coming out, you're left sitting there doing nothing for about half a second, finally Q, and after its .5 second delay, a healing particle comes out that takes another half second. I always seem to die before that particle gets to me. Always. No other champion outside of Taric and Nocturne have to wait this long for their kit to reward them to any significant degree.

Fix this junk up and Vlad will feel way better. If you keep buffing him until he feels usable, you'll find he's over-bearing. Please save yourself the trouble and just give Vlad some QoL changes now.

The hotfix will help with the imbalance between his sustain and his E cost, but that will primarily help his laning, not teamfighting where all of the mechanical issues above are emphasized and prevent even the hotfix from being a noticeable change for him.