Agreed. Adrenaline and head shot are redundant imo, and slaying arrows has such great synergy with adrenaline. Arcane archer tier 5s are better for fury. Deepwood stalker tier 5s are better for dreadnaught and divine crusader.
Fury is still the best destiny if you want to emphasize burst dps, but I don't think it's the better option for consistent dps. Dreadnaught and divine crusader are the best choices for that. Divine crusader is a solid choice now with the changes to doubleshot. Zeal for doubleshot and ranged power, +1 crit range, +10% damage through consecration, blessed blades for breaking dr, and wis for paralyzing arrows DC.
I absolutely agree with you about shiradi. I have not been impressed with it on any kind of ranged build I've ever played. I think people are attracted to it because it seems intuitive given all the abilities that work with ranged attacks. But when you look at the other options (i.e. fury, dreadnaught, divine crusader), shiradi just doesn't compare.
Based on my experience with White Feather Sniper in my sig, a sufficient paralyzing arrows DC makes nerve venom and whistler unnecessary. It's easy enough to paralyze an entire room of mobs and really doesn't take that much investment to reach a sufficient DC.