When the Greymoor expansion was announced, it was supposed to be the one that can make vampires great again. Don't get me wrong. NPC vampires are flashy now. In fact, they are so flashy they can make you, the player who actually spent the money, feel insecure because your skill line as a vampire. It appears that the new skill line is almost similar in terms of function as the current one. The only difference is that the new one has more uselessness to it. Here are some points from the PTS so far:
1. ZOS has given us a new powerful spammable that can make all spammable feel weak. This is probably the only reason why you need to be a vampire. Get ready folks because it might be the case that all of us will be using the same spammable. This has the potential to break class identity. And what does it look like? A reskinned Burning Embers. And guess what? It's a magic damage spammable ONLY.
2. For some reason, the most badass vampires, those high level ones who kept on feeding, are the most susceptible to death. With Frenzy (perhaps the second most useful skill for PVE) got nerfed, it was rendered useless. No one's going to make use of this skill unless if you have a fetish for becoming the weakest character in your party. As of the current PTS, unless you're doing RP, there's absolutely no reason to go higher than stage 1 vampire.
3. Vampires don't have any other type of damage other than magic damage. Even the skill that looks like you're just slapping your enemy is magic damage. Contrary to the new video released, vampires (the players at least) can't go to endgame with swords and other melee weapons at hand. Whoever made that video is kind of misrepresenting the vampire skill line.
4. Where is the lore that states that being vampires made your active skills more expensive? Seriously. And in relation to this, the current Vampire Lord set is more useful in Greymoor. But guess what? ZOS changed the set so that it can make you feel like a total loser.
In terms of the Vampire skill line, this is bordering into much ado about nothing.