What if locking on to someone negated the ability to be backstabbed by that person?
Think about it. Backstabbing was more than likely supposed to be a mechanic that gives you an advantage for when you get the drop on an enemy. But it's abused by people being able to backstab in the middle of a fight. When you're fighting someone, you're obviously focused on them so they shouldn't be able to backstab you.
If that didn't work, then what about reduced damage when you're locked on and get backstabbed? That way, punishing people for chugging potions or healing is still affective, but less effective to the point where you might just be better stunlocking and definitely not worth fishing for backstabs.
Or there could be a mechanic that makes you auto-lock off when you drink a potion or use humanity so the punishment for trying to do that in the middle of the fight is still significant, but backstabs would be weaker when you're still locked on.
TL:DR
Few ways to fix the backstab problem.
1.)Can't get backstabbed by someone you're locked on to
2.)Reduced backstab damage by somone you're locked on to
3.)Can't get backstabbed by someone you're locked on to, and you automatically lock off when you heal
4.)Backstabs during healing animations do full damage
Think about it. Backstabbing was more than likely supposed to be a mechanic that gives you an advantage for when you get the drop on an enemy. But it's abused by people being able to backstab in the middle of a fight. When you're fighting someone, you're obviously focused on them so they shouldn't be able to backstab you.
If that didn't work, then what about reduced damage when you're locked on and get backstabbed? That way, punishing people for chugging potions or healing is still affective, but less effective to the point where you might just be better stunlocking and definitely not worth fishing for backstabs.
Or there could be a mechanic that makes you auto-lock off when you drink a potion or use humanity so the punishment for trying to do that in the middle of the fight is still significant, but backstabs would be weaker when you're still locked on.
TL:DR
Few ways to fix the backstab problem.
1.)Can't get backstabbed by someone you're locked on to
2.)Reduced backstab damage by somone you're locked on to
3.)Can't get backstabbed by someone you're locked on to, and you automatically lock off when you heal
4.)Backstabs during healing animations do full damage