anyway, BS and roll parries need to be patched. it's way more broken than backstabs in DaS1 ever were (and if it's not patched, it will be used as much if not more)
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.