No additional options?

This goes into a very complex area. You have a defense stat, you have skills and other things that ignore it. You could say you may as well remove the stat and the stuff that ignores it.

But also as you level up your skills or you gain an item or whatever your character slowly becomes more powerful on its own without having to spend stupid amounts of cash. You feel like you're actually becoming more powerful the more you level without changing your equips or anything.

I understand what you're getting at with this and i think you're right.

What girasol said makes me think they'll cap PDR ignore at 90% or something. It's still relevant, and you can still reach it easily, but it will still reduce your damage enough to have an impact.