I realized the other days that friendly fire would be a great addition to DS2 for both players and mobs:
there are no more invincibility frames during a riposte or a backstab...so taking on groups of enemies will be very very tough...if they can damage each other though...that would balance things and create positioning strategies considerably improving the PvE experience.
It would make coops much more interesting: you would actually need to pay attention to your buddy's location before swinging you bad ass mega great-sword...people would then need to actively cooperate, come up with placement strategies rather than just ganging up on some boss and just making the fight 3 times easier and faster.
even ganking would become stylish ! you would also need to be good at ganking rather than just be more than your opponent and press blankly the button to win (never really quite understood what was the fun part in ganking but anyways)
that would definitely give a chance to the minority if playing right and once more making strategic positioning so much more important!
what do you guys think ?