There needs to be some form of compromise, can't just remove it and keep everything else how it is. Needs to be some element of risk involved once you've left those 3 rounds of combat otherwise it's way to easy to switch accounts which isn't good for PKing. I personally would much rather have the chance of getting away because the person chasing me can't keep up the rhythm and walk cast consistently than have to worry about being stood still for 10 seconds, I think you're far more likely to get away when being walk casted personally, unless of course you only have a couple of food or no food left or whatever when you leave those 3 rounds in which case you're more than likely not getting away whether you have to stand still for 10 seconds or try and escape the walk cast.
-1