I want to point out that while the counter ability unlock on tanks is new, the reduced optimal timer has existed on tank signature defensives since EW, notably with Holy Sheltron, HoC, etc. You have a 4s window of increased mitigation within the 8s of total duration. Having to time a tank defensive right is not new by any means, but I'm happy they're keeping it. To me the addition of the counter ability that it unlocks if the damage is blocked within the optimal timeframe feels like something of what could have been added naturally within reborn in EC if they had kept their formula normally without any Evolved in the works.