Surfaces alone have honestly become a pain to the player so much that my friend and I deliberately try not to create them so we don't have to deal with them ourselves. Often we avoid stunning an enemy because they have a water surface or stupid amounts of blood under them and it would cause us to become stunned ourselves, fire often seems to end up travelling farther than we expect and poison has become just as much of a problem, especially when combined with fire as the explosion damage seems to almost kill us every time when most other things don't even come close to that kind of damage. Sticking with physical attacks and knockdown seem to be our best options so far... to feel punished for using the effects of your class or skills should not be a mechanic in any game because why on earth would you use them then? We certainly have refrained from using most of the skills we used to love in D:OS1 as they cause more problems than they solve now.