I have my seat with the nose one notch down from level. It works for me and I have seen others with the same setup.
Fit is important but you have to realize that not everyone is built the same as the mold used to form the plastic/carbon seat pan. Some people are a bit bigger and some are smaller in their crotch radius and no seat will properly fit them. So we have to adjust the seat to fit our bodies.
If you aren't having any physical problems with your prostate or bachelor nerve cluster with your seat adjusted the way it is, then leave it alone.