DRK changes from Prelim notes

[Reynhart]

The main difference is that Sheltron is a strict dps gain (vs. being a situational gain or loss).

Sheltron is a DPS gain only if you wouldn't have proced Shield Swipe on CD without it, which, considering PLD native block rate, is not that difficult, especially now that you have a chance to block any magical AoE. And it doesn't offer as much reward if you don't actually tank something, while TBN can be cast on anyone for an easy 50 blood.

As for IB, my point of view is that the skill should have the same potency as Fell Cleave, but should suffer from Defiance damage penalty. This way, if you're forced to use it by itself, you wouldn't lose that much DPS, and if you pair it with Unchained, you'd only lose the Deliverance buff. And the same would be applied to Steel Cyclone.