Is Human DNA as good as it gets?

As was already stated, "most complicated" does not neccesarily equal "best".And I would not say that we are biologically "as good as it gets". There are many areas we could be improved upon. (Stronger immune system, more accurate eyes, Gills? etc)I will be interested in (and scared of) the human gene experimentation we might see in the future. I believe it will start with simple things, like modifying DNA to create stronger immune systems. It may or may not build up from there. (Blue-skinned fellow with telescopic eyes? It might happen...)