if you gave the boss infinite initiative he always be first. But if you give him a force script to be first and then normal initiative he only be first in the 1st turn and then the rules apply normally, so you can outpace him as any other enemy. That is the way it is made now and it is a solution far more elegant and logical that the solution you proposed.
Why would you want the boss to be outpaceable from the second turn ? didn't you say you liked tough bosses like Alicescon ? Well ... actually the script solution works ... if it was designed to be like that, but i think it's awfully complicated for such a simple task. And it's buggy. Hence this thread...
