A while back they proposed bring out champs that would bypass dodge; which they then stopped/delayed. I suspect at some point they'll roll them out to remove that method for surviving harder difficulties (and put dodge on par with displacement for getting reduced heavily in hard settings).
The problem with all of their changes is that they always destroy the weak to limit the power of the strong. Rather than having -30% to concealment they could have "all concealment above X% is ignored." For people with a lot of concealment it would be the same effect, but for people with very little it would have no effect.
The same with dodge. If they feel 95% dodge is too much, I can tolerate them having monsters that ignore all dodge over a certain percent. But when they do a flat subtraction to everyone's dodge (bringing most people down to 0%) just so that the most powerful players will have a reduction, that is when there is a problem. I swear the developers never spend even 1 minute thinking about how they can nerf the extremely powerful without hurting the already weak players.
In my opinion, massive defense should be way easier to achieve. Given that the game has gone the route of making monsters hit like trucks, it shouldn't be that difficult to build your defense up on any class to the point you can survive most things. I'd like to see first-lift characters have excellent defense so they can join any group that has an LFM up. Maybe they are far weaker in terms of DPS (which is how we tend to rank the good players from the bad), but they don't need to die all the time as well. Especially if they are trying to survive by casting displacement and having it unreasonably weakened just because the most OP players were using it to face roll content.