General Overview
Balance in PvP right now isn't perfect by any means but it has found an acceptable middle ground for the most part with some outliers being too powerful or not powerful enough and some distinct meta trends setup, class wise.
Ganking and full damage builds in particular are more threatening than they've been for years. Getting solo bombed isn't uncommon and TTK is rather low especially when building for damage however outside of necromancer and Stamwarden this also resulted in your own survivability taking a huge hit and you could die in the blink of an eye on the other specs when you wanted to run high damage.
Those damage numbers were caused by a few different things over the past few patches like the introduction of CP 2.0, buffs to sets and more sets adding damage along with nerfs to defensive buffs.
Outside of those three specs (Necromancers and stamden) and full damage builds the Time To kill was really healthy for the game, fights end rather fast and individual mistakes are punished far more this patch.
Update 31 defensive issues
With the transition to Update 31 the devs have stated the wanted to increase the TTK but the devs way overstepped the mark of a healthy TTK.
On Pts duels are once again never ending stalemates with the only way of winning duels is by playing templar with the newly buffed Backlash or abusing burst procs again.
The first mistake this patch has done was adding almost 20% flat mitigation to everyone in PvP (44%->55% battle spirit mitigation increase). This alone is way too much of a defensive buff even for classes that needed it previously, what it has done to necromancers and stamden can't even be put into words other than "immortal".
But it didn't stop there we also got new defensive CPs that give everyone access to major protection right after breaking free (the time when most kills are secured) along with the reintroduction of Ironclad and two more overtuned defensive CPs with bracing anchor and Pain's Refuge having the potential of adding more mitigation than any other CP we currently have.
But CP and battle spirit aren't the only issues who have turned pts to a brickwall fighting contest.
Revealing Flare giving permanent major protection.
Deliberation adding 30% unnamed mitigation.
I'll just list those defensive buffs again
22% mitigation via battle spirit
10% mitigation vs direct damage
Major protection after CC break
Up to 20% mitigation via pain's refuge
20% block mitigation via bracing anchor
Permanent major protection via revealing flare
30% unnamed mitigation while meditating
This is simply too much and will push into one of the worst tank meta we have ever had and we had those way too often in the past 5 years.
Update 31 offensive issues
This patch is not only defensive wise a catastrophe for balance but also offensive wise eventhough defence is overshadowing offences right now.
1. Inner Beast
This ability now grants the highest amount of damage done outside of incap. It's so powerful that viability of specs will be strongly influenced by whether a class can free up a bar space for this or not, it will be used by anyone who can no matter if it's a stam or mag spec. This means after ransack, caltrops, ele drain and camouflaged hunter we have one more universal skill that is actively pushing people to drop class skills in its favor. This is yet again an unnecessary change that further weakens the border between classes due to a universal skill overshadowing all class abilities.
2. Return of instant burst procs
Two sets I'd like to highlight here are Hrothgar’s Chill and Thunder Caller. Both deal instant proc damage with very easy proc conditions. Hrothgar's even goes so far that it ignores any own stat scaling and shifts it completely to the target even vs low resistance targets the damage is so high that you'll want to run it as the set is turning your non damaging CC into an offensive CC.
Thunder Caller on the other hand offers 25% more damage than vateshran 2h (which deserves a nerf on its own as it dictates which sets are being used along with it on every stamspec) while being easy to proc with no previous setup and absolutely no time to react to it.
Summary
Mitigation has to be brought down on PTS the main offenders have been listed above.
Inner Beast and the current iterations of Hrothgar’s Chill and Thunder Caller should never see the light of the live servers as they'll be the absolute go to set on most specs.
Don't push the game back into a Tank Meta pit.