I've seen a lot of discussions during Shadowbringers both here and on reddit about making tanking more interesting by having timed counters following your defensive moves, similar to what BLU has with Chelonian Gate and Cold Fog. I think this got converted to 'if you time your defensive moves more effectively, you should be rewarded with more defense.'

What makes it particularly silly design is because tanks have traditionally been rewarded by doing the exact opposite, i.e. taking a tankbuster on the very end of a defensive cooldown. Anyone and their chocobo can reflexively panic pound the mitigation key when they see a big red arrow and 3 second castbar show up. It's another thing altogether when you've activated a 20 second defensive move 18 seconds in advance of a tankbuster in order to let the recast start ticking down earlier. It actually does the exact opposite and interferes with more precise defensive usage. I'm glad that DRK doesn't have this in its design.