Well, as always, it is not a single issue by itself that causes a problem and everybody will believe to have found the “real issue”.
That said, I’ll try and offer an analysis from my point of view and experience in PvP and this genre in general.
If we look at all the aspects of how condition damage is applied (unavoidable procs from traits, critical conditions that can not be cleansed individually due to a multitude of different conditions providing coverage etc.), the underlying issue when it comes to damaging conditions is the potential damage (per attack) they are designed to deal.
So what is potential damage you may ask.
Potential damage is the total of damage a single condition applying attack will deal if it is allowed to run its course. The general potential damage of a condition applying attack is way higher than that of a single power attack, especially in the context of range vs. melee dps guide lines. Extreme builds can literally stack so much potential damage that they are able to kill a light golem with a single basic attack (#1) as a result.
The reason for this design decision rests on the fact that condition damage is balanced around cleanses and the furthermore that condition damage can not be allowed to exert its damage too quickly, because it ignores most passive and some active defenses.
Cleansing can nullify most of the damage conditions are able to deal, so in order to create meaningful play and counterplay (realistically you will never be able to cleanse a condition immediately, so that part of the damage will always be going through) and keeping the restrictions in mind concerning passive defenses, the conditions applied usually have significant base durations (as a result obviously the player who can prevent most of the potential damage through cleansing, is better off right now).
This dependency and interaction between damaging conditions and cleanses, however, creates an environment where conditions have to be cleansed in order to be balanced. Instances where they can not be cleansed reliably will put their effect beyond what was intended (an oversimplified example to visualize the above: if I hit a meta build D/P thief with a Pin Down right after he used Hide in Shadows, which puts him back at 100% HPs, he will die from this single attack. He can run, hide and avoid any other attack I’ll follow up with, but unless he gets back to his guardian for a cleanse, the potential damage of that range attack will be enough to take him from 100 to 0).
Some people will read the above and the first thought crossing their mind is “But even if my build focuses on cleanses, the conditions will still overwhelm me, because of the frequency with which conditions are being applied and the coverage provided by so many different type of conditions I can be affected by”.
While this is definitely what you observe, this again is a direct result of how long conditions last. The longer each individual condition lasts, the more conditions will ultimately provide coverage, because of the residual conditions still on you after a cleanse. This means that on the next condition cycle you are hit with, you will have to deal with any residual conditions that haven’t fallen off yet from the cycle before on top of the new cycle.
Now there are several remedies one can test to see if they can take care of these issues and that’s what the staff has probably been doing:
1. You increase condition removal across the board
I believe that is what we have been seeing recently. The upside to this solution is that you create more instances where conditions are cleansed, thus increasing the chance of having conditions deal “balanced damage” overall.
The downsides are that additional cleansing capabilities usually don’t come for free, as you will have to pick them up in exchange for other abilities. If you do not pick them up, you are in the same boat as before. This also puts the burden entirely on the defender, rather than making the attacker “work” harder for their kill.
Furthermore, while this solution will increase the chance of conditions getting cleansed, there will still be instances where they are not, which will again push them beyond their intended effect.