YES!!!!!!!! Even though my teeth are straight, I'd like to change just a couple of things about them to make them exactly how I went then, just fine tune a couple of things. But I'd get it done in the same procedure so I'd only lose one year!!! Cheating the system!!!!
I'd probably make my nose a bit smaller, get rid of the bump in it and then leave my nose at that. Maybe take an inch or so off my height too. So, three years off my life, assuming I live to at least the normal life-span? Sounds good to me.
The one thing I'd like is a really nice smile. I don't know what it is about my jaw but there's pretty much no way that I can smile like a normal person in photos without me pulling some sort of facial muscle. The rest of my face I have no real issue with any more. I used to hate my nose or my ears or round face but I've gotten used to those over the years; they're what make me me, for wont of a cliché. But the smile is something that I'd still like (it's definitely genetic, as my mother's in the same boat!) and if it means sacrificing one year, then I'd probably do it. So long as the sacrifice came at the end of life (and wasn't like you'd have to spend a year in some weird-ass jaw reconstruction facility... I'd like to enjoy 2013, please)!