The knockbacks are one of the worst aspects of this game for PvP in my opinion.
Knocking people off ledges in Huttball, or to their deaths in Voidstar is cheap and annoying.
It's been a long time since I've played a game where you spend more time out of control of your character than you do in control for PvP.
Sure there are knockback abilities in other games too (nothing like being blown off LM to ruin your day) but it's not nearly as constant as in this game. There are so many force users and the CD is so low, you just expect it to happen every time you stand near a light saber.
I really do think knockbacks are stupid but in huttball sometimes they seem almost mandatory because of how many classes that can charge across the map, or pull across the map, or go completely immune to stuns for like 3 seconds and have a sprint. Maybe they should have made the field a bit longer and not include all the stupid hazards. The way it is now either you score almost completely untouched or you get knocked off. Sometimes a tank with protection will carry it the whole way though if you're lucky.