I still use mist form for root break and escape from multiple enemies, and as vampire stage 4 I use it in my rotation to get damage buff.

Mistform is still useful in short bursts, but there is still the spammable and ultimate. Despite the nerfs Blood for Blood is still good if you know how to use it, Arterial Burst is a very cheap spammable, and the ultimate is a reset button in case of emergencies.

The stun is good in PVE but I would only use it in PVP if I knew I was going up against ball groups, and Blood Frenzy is a nightmare to use right in PVP. Nobody uses Drain in combat so it's a no go, especially in PVP when it can be line of sighted and interrupted.

While I think the Mist Form nerf should have been handled a bit differently, it's still usable as an escape/mobility tool, and sometimes as an alternative to block. That said, in many cases you'd be better off ditching Vampirism entirely and using RAT for your mobility. During the small amount of time that I've spent in BGs this patch, Stage 3 + the Undeath passive no longer felt noticeable; getting essentially 1-shotted by some Stamina builds was a very real thing.

None of the other Vampire abilities are really all that useful. While I guess the spammable isn't necessarily terrible on its own, many Magicka builds aren't really able to utilize it effectively when up against decent opponents. Bad mobility and a lack of good snares, roots, CC, gap closers, etc...make range matter a lot more than it does to a typical Stamina build. Basically, imagine playing a Magicka Templar without Toppling Charge + lower damage and no snare on Puncturing Sweeps, and you have many Magicka builds' situation with the Vampire spammable.

The Vampire CC is a huge disappointment. I was really hoping to have a good, offensively-focused CC available to my Magicka Necromancer, but what was delivered is probably the worst CC in the entire game...by a country mile. I've had it fail to work multiple times in a row, against people who were spamming Dizzying Swings on me while not being CC-immune. The CC that did function properly was the one that doesn't even require a GCD, when they would split-second Medium Attack me in order to reliably drop a Dawnbreaker and finish me off. It's a total joke.

The passives are good especially for NB. Strike from shadows = 300_ weapon damage. No speed reduction in stealth. The ultimate is still good in PvP for charging groups.

I still see people using mist form despite the additional nerf