Server-side detection hits are going to ruin the game for killers
I play survivor a lot and can say that getting hit from multiple feet away can be really frustrating at times and take some of the enjoyment away from the game, but as survivor you still get 3 chances even without second chance perks.
Killer though, is a whole different ballpark. One small, tiny mistake can lose you the whole game. Simply missing one hit on a survivor and the chase dragging out for another 15-30 seconds can be the difference.
When this new way of detecting hits comes out, killers will now start swinging through survivors and getting empty hits. This happening just one time in a match could be enough to lose a game, not to mention if it happens multiple times to multiple survivors.
If this server-side detection works like I think it will, I think a lot of killer players will stop playing or getting the same enjoyment out of the game.