I haven't played this patch yet but I think the nerfs are heavy-handed. The Overguard nerf isn't too bad, I don't think but the LoS check on Tragedy is, well, a tragedy. LoS checks in this game are pretty wonky, enemies will block LoS which means in a target-rich environment a single enemies in a bottleneck will stop you from doing any damage.
Maybe instead make Tragedy a cone? Make it 1.5x as wide as Dark Verse but lose the LoS check.
I knew you'd nerf Divine Retribution but -50% range is too much. Is there another augment that reduces the attributes of a power? I can't think of any off-hand. I think it should lose the 1.5x multiplier instead.