I disagree with your assessment of my motivations. Right now we have a system that rewards skill with efficiency in pve. The less optimal active defense is, and more passive defense is, the less skill based the pve game becomes in the end.
I don't "fear" that I'm going to stop being OP with damage, or whatever, because under whatever system they create I'll be better than most players. What I "fear" is they are going to damage the integrity of the game by ruining the balance between active defense and skill. I worry that the game will become such that a person who freshly installs the game and loads up on Clerics gear will be 99% as effective as a seasoned veteran who is geared the same. Currently, we all agree Berserker is the most efficient pve gear set. But ask a new player to run dungeons in berserker and they will faceplant. I want to maintain a system where efficiency is "bought" with experience and practice. I have serious doubts that a passive defense based meta would maintain such a system. Sure I'm biased, but I'm biased in favor of a skill based game.