Just today, I was reading a story about a man in China who had a penis transplant. His was mangled in an accident about a year ago. Everything was going lovely. But, he asked to have it removed because his WIFE couldn't cope with it. (???????)
For myself, yes, if I had a limb missing, and had the opportunity to 'regain' the use of another one.....I'd do it!
Same with the face transplant. No doubt it would be very shocking for the first while, but, I'd rather see flesh than bones and teeth looking back at me in the mirror.