I tend to agree that the change to IB is not in line with the initial design of a self healing tank which is what appealed to me in the first place.
My suggestion, keep IB the way it was in 2.0 but give Steel cyclone the 20% damage reduction. We still need some mechanics to do scaled mitigation.
That way we have 2 mitigation mechanism and Steel Cyclone would actually be useful.


I feel wrath are now useless and there's little benefit holding them aside from specific fight mechanics such as Titan's scripted rotation. In most case, I'll always want to use my wrath since they now become just a resource and not a benefit in itself.
Since there are no downside to using wrath anymore, you're just wasting resource if you don't use one of the ability.
What you're saying about infuriate is very true and it's now becoming a pretty bad skill to get at lvl 50 since the benefit is meh...

Overall, I'm happy with most changes in 2.1 but IB is currently just fine the way it is. Just give the 20% DR to Steel Cyclone instead (or give back the 1.0 version) and it'll fix a lot of the issues raised here.