One of the great advantages of fully committing the motions of the draw stroke to "muscle memory" is that it frees the conscious mind to constantly assess and analyze the fight. Thus, I'm a little hesitant to agree that "assess" is an extra step. Rather, it's something you should be doing concurrently with the draw. A lot can happen in a fight in a second and a half. It may be that by the time you get the gun out, the situation has changed.I was taught the 4 step draw also, but the last step is to assess when pointing. Every instructor has their own style.
I do agree that one should come to a ready position after the initial fight is over and scan for secondary threats.