i think that 'necessary' and 'not necessary' are very relative. i also agree that there are always "options," and that all of those options carry risks, and that often those risks are varient, but of no greater or lesser risk per se. (that is, c-sections carry "these" risks, while breech natural births carry "those" risks).
i also agree that there are times when c-sections are absolutely necessary for medical reasons--whether emergency or scheduled. it is an important technology that any woman who feels/thinks/believes that she needs one should have access to. thus, i wouldn't 'forceably' (via laws, etc) keep women from them if she chooses one. i simply hope that it is an informed and freely-chosen course of action.
i do not know your medical history, your special needs, your baby's needs, the situation's specifics, etc. thus, i cannot answer whether or not *your* c-section was "necessary." with this, it would therefore be *highly inappropriate* for me to "villify" your c-section.
so, i won't do that.
but, i suppose i can talk about myself and my thinking on this. i do know a bit about nuchal cord because one of my clients brought it up when i spoke to her about UCing
(this is my prefered 'method' of birth.
knowing myself and taking the assumption that the situation was only frank breech and a cord wrapped around the neck, in a first birth, and assuming that spinning babies, webster, and natural course of labor didn't change the situation, i would have continued with a UC (this is my plan--i'm neither pregnant nor do i have any children).
why? gentlebirth.org has an article about somersaulting the baby
as it comes out breech with a wrapped cord to avoid pressure on the cord during delivery, to avoid it 'pulling' on the placenta, etc.
it seems like it often happens 'on it's own' (seemingly the baby 'twists as it comes out unwrapping the cord as she comes down) so a UCer could handle it, learn it, or figure it out--or simply bring in an experienced midwife to help. I trust myself enough to figure it out, yes, even in the heat of the moment.
but, i won't know if there's a wrap until the birth begins, as i won't get an U/S either. but that's neither here nor there.
in the end, i would not have scheduled a c-section, but i would not have ruled out calling a midwife or transfering to a hospital for an emergency c-section if i felt strongly that it was appropriate.
for myself, i think that the risks of a scheduled c-section far outweigh the risks of a breech birth with nuchal cord at home UC or midwife assisted.
as for this second scenario, it is entirely up to you. it seems 'unusual' or 'strange' to me to consider a potentially dangerous surgery to a safe vaginal birth (i assume that you are healthy enough for one) simply to reduce the appearance of a scar. why not have a safe natural birth and save up for the simple, and far less dangerous to the baby and yourself, and likely far less expensive, plastic surgery?