My HS LR has a reticle thickness of .08 MOA which is half of the FFP version and I've pushed it out on goats to 1200 yards on the nose, at a 1000 yards I feel the reticle thickness is a little heavy doubling it would not work for me, the numbers say it's small but when it's on game it's telling me something else. I've been holding for wind all year and been dead nuts on, not one issue holding wind with a SFP scope but I also know that when I'm turning my scope down I'm in a hunting situation that I'm not going to have time or need to hold wind, it's going to be point and shoot. If I have time to dial I have time to get my optic on the correct power so it has not been a hindrance at all.
I do like holding wind vs dialing, I screw up dialing wind even when I'm looking at the freaking dial, for targets I do still dial windage though.
So personally for me the reticle is way to thick on the FFP and I have not found a need to have the reticle stay the same at all powers, and I don't want a thin small reticle in dark timber on the lowest power and I get a free set of Nightforce rings with my SFP vs the cost of a FFP