Why "fix" things if I consider myself on a successful path? If you don't see that I am, at least respect that I am comfortable with me being me and satisfied.
1. You (and some others) seem to equate any attempt to "fix" the situation as an affirmation that your condition is an inferiority and therefore reject such attempts (e.g. I know many people in the Deaf community reject cochlear implants due to this reason and out of fear that they would be rejected by the community). Yet, they don't have to be so opposed to the other. A famous example is Oscar Pistorius (http://en.wikipedia.org/wiki/Oscar_Pistorius) who have qualified for the Olympics in 400m. He is using artificial legs but I don't he views himself as an invalid.
2. Coming back to the desire of some Deaf parents to have a non-hearing child: If you think that Deafness is somewhat a cultural artifact then there's nothing wrong with this (I want my son to be fluent in my native language in addition to English), yet ethically this idea seems wrong (e.g. I could only find an old example online: http://www.guardian.co.uk/science/2008/mar/09/genetics.medic...), here's a discussion on the subject (http://wiki.answers.com/Q/Is_wanting_a_deaf_baby_if_you_are_...).
My principles in life is pretty simple. Respect one another and I will love my child regardless s/he is deaf or hearing.
The same question, as you're indicating above about deaf vs hearing babies, is akin to someone asking me what I hope for: Boy or Girl? I say I would love a daughter but no matter which gender that pops out, I will have my undying love ready if not already.
Live and let live is what I try to do for myself and others, including yourself.
Perhaps someone can answer and engage themselves into the questions you've asked. My life principles are too simple to engage myself into this.