I had my bicycle professionally fitted last week by someone who specializes in said fittings. People come from great distances for a good fitting. I felt perfectly comfortable on the bicycle prior to the fitting, and I feel the same now even though substantial changes were made. I got to watch myself on video prior to the fitting, and I was really askew on the bike, and my right leg was much closer to the top tube than my left when I pedaled. My seat previously was full back, and now it has been moved quite a bit more forward and higher. I also have a shim in my right cleat due to a measured leg length discrepancy. I also went with considerably less rise in the stem than previously, but went from a 100 mm to an 80 mm stem.
It is said that when down in the drops, when you look down, the hubs should be obscured by the handlebars. Prior to the fitting (probably because my seat was well back), the hubs appeared aft of the bars. Now they are forward of the bars.
After all of this BS, what I am trying to get around to is my question, to wit: How important do you think it is to be in a position in which the hubs are obscured when on the drops?