If that is a feature you want you only need to ask, I will tell you, or Sph4ck will tell you if we can add it to the list or do it sooner than later.
I will tell you now, that unless we can get a good way to aim at the head of a running player, adjusting the aim, to a random spot that is "targeted" as in a targeted location on the body, is not going to be very easy. I will discuss with Sph4ck about making an "invisible" box, that fits nicely inside of the players body, and the aim target will be chosen at random inside that box. Does that sound good to you? Please reply to this thread with something that tells a mod that your question was answered, if you feel that this is helpful. If you do so, please continue this over in the 5.0 hack thread.
EDIT: What I meant about him needing to post in the hack thread, was that he is more than welcome to ask Sph4ck or myself, we will listen.