It'd be pretty hard for anything to reach the metagame saturation that backstabs were at in DeS/DkS1.
While backstep/roll parries are annoying, they don't invalidate entire weapon-sets or builds in the way that roll-backstabs and poise-backstabs did. A majority of the attacks in DkS1 were punishable by one of these techniques, and many builds had no way to profitably attack poise tanks or to attack at all (heavy weapons). Yeah, backstabs (that weren't Hornet Ring enhanced) did a little less damage in DkS1, but there was the absolute retardation of chain-backstabs, because From doesn't understand the idea of wakeup i-frames actually extending all the way through the animation or the idea of implementing reversals.
Also, if the rumors about the Monastery Scimitar are true, that it has a significantly larger parry window combined with the Curved Sword nigh-instantaneous active frames, that might be almost as bad as backstep parries. At the very least, it probably contributes to the increased degeneracy of that technique. I've noticed a huge upswing in Monastery Scimitar use (in the off-hand) and it seems to make parrying into E-Z Mode. I've been reaction-parried even when using some highly unpredictable techniques, like switching out a buffed-weapon to a different one, in mid-run, solely for surprise/unpredictability factor.
dude, backstep parry literally invalidates every melee weapon other than whips, ultras and greathammers (whose 2H movesets cannot be parried). so you're left only with magic, which is mostly piss easy to dodge, and there's also armour combinations that can (with GMB) almost negate most of it anyway. plus, it's way waaay easier to pull off than any of the more advanced backstab (i.e. more advanced than the basic backstab) techniques in DaS1. how's that not more broken than backstabs? do you enjoy fighting powerstanced mundane havelyns? because that's all that's left if this doesn't get patched out
and people really overstate the backstab problem in DaS1 PvP. BS fishers (on PS3 at least) were barely more common than cheaters (on PC), and very easy to counter backstab. plus, you really had to know what you were doing with heavy weapons. i never managed to be good with them, but i've fought plenty of folks that "wrekt d00ds" with the heaviest weapons (zwei being a classic example, as was the large club). chain backstabs were stupid, but most people realized the retardation and were quickly de-mode (i don't think i've been chain-BSed a single time in the whole of 2012. sure, i'm only one sample, but if they were as prevalent as people make it out to be, like f.e. giant dads, i should've faced at least one or two in a year, no?)