Don't think the DH rework will fix much
It might be a bit early to say, but going off of what I read, I doubt the DH rework will benefit anyone but killers that can hit over vaults, like Nurse, Huntress, Phead, etc., as well as some unique cases like Trapper, whose traps could be dodged by DH.
The problem is that if a killer is chasing you to a pallet or window, and they have no way of hitting you once you're on the other side, (which is most of them,) then DH is still a get out of jail free card for greedy survivors. Say you're chasing someone to a vault, and you're just about to hit them before they can make it because they overextended, or made a mistake earlier in the chase; they can activate DH, and you can't touch them, even if you've made enough distance to lunge and get the hit in time. Now this is still a nerf, because killers like those ones I mentioned earlier can just wait for you to vault, and by then DH's duration will probably be over. But M1 killers that have to chase normally and eat more pallets? Y'know, the ones that actually needed DH to get nerfed? They're still gonna be stuck in the same situations that they were stuck in earlier-