Although I have never actually owned a VC army, I've played against them numerous times. . .in old editions. Combining what I know from my experiences with my month-long knowledge of eighth edition, here's my thoughts:
Vampire Lords are, and always will be, up there with Chaos Lords as the be-all-end-all close combat beasts. When you combine that ability with their ability to cast, you get what is probably the best non-special-character characters in the game. So pro number one is really good entries in the heroes/lords sections of your list.
Core infantry is con number one. From what I've read, zombies have become relatively worthless in 8th, and skeletons never really did anything except auto-break elite units that had a bad round of dice rolling. . .and now they don't do that anymore with the change to the fear rules.
Special/Rare choices, like every army, have their own good and bad points. I've always gotten slaughtered by Vargulfs, so I shoot them with everything that can draw a line of fire to them. The Black Coach is an uber-chariot, but like all big single models, is susceptible to dwarven/empire gunlines and stone throwers- both of which are way more accurate now.
Finally, I know that the old addage when using this army was to take lots of low-level necromancers who could then cast lots and lots of movement and raise dead spells; now, the number of magic users you have is not nearly as relevant, since the winds of magic rolls determine the number of power dice you have. So, I would imagine that the old days of getting overrun during the VC magic phase is (thankfully) behind us.
Just my thoughts.
