after giving the new meta a few days of my life spend theorycrafting, tried out several different comps. Theres one thing thats become crystal clear to me.
Balance team and raid/fractal design team do NOT talk with each other.
The biggest issue with the current balancing, and something the balance team really SHOULD have been able to foresee, is that you get punished hard everytime you have to leave the group "stack" for some mechanic. You leave with minimal boon duration left on you, have to survive somehow doing your "thing", and you come back without any boons most of the time. And of course, mechanics usually are staggered, so that means, if you are unlucky enough, you are the poor guy that has to wait 20seconds SoI extension of any boons you might get while waiting, meaning you are left with low might, low fury uptime, low protection uptime, etc.
Now, most raid encounters and a lot of fractal encounters, as well as most fractal instabilities FORCE you to leave the stack, or prevent you from stacking tightly in the first place. This dichotomy makes for very unpleasant gameplay.
On top of that some boons are so elusive (fury, vigor, stability), or one build is so OP at providing them (druid -> might, herald -> protection/fury) that it really limits any kind of alternative comp.
All in all, current balancing might not make raiding impossible. But it sure makes it unpleasant, unfun and frustrating. Especially if you are trying to optimize squad dps.