Personally this is how I'd like to see knockbacks and enemy pulls work in the game.
1st knockback/enemy pull - Well played Sir or Madam, well played. 2nd knockback/enemy pull - Sigh... 3rd knockback/enemy pull - Really?!? Screw this ... BFG instant kill that player or BFS (if you're wielding a Saber)
In my eyes this is now enjoyable for both parties. First two laughs are on the enemy last one is all mine. Of course there would have to be a time frame of oh 30seconds or so for these consecutive knockbacks to take place and grant an instant kill.
Also, something like this would have to be implemented by Bioware, which I highly doubt.
As long as I'm on the topic of wishful thinking, here's my suggestion for the Resolve Bar.
Rework and rename it to the Hulk Bar When the bar reaches 100% you turn into a big green unstoppable version of yourself and go on a warpath instant killing your opponents for 3-6 seconds. (3 seconds for ranged 6 for melee)
Once again wishful thinking and somewhat joking, but would 100% make pvp a lot more fun.