I haven't done anything about my downstairs hair, and, given that Dr. Brassard is my only option for SRS and he doesn't require hair removal, I probably won't.
I consider myself lucky to have had very little body hair, thanks to DES. If I had had the wookie look on my chest or my back, my body dysphoria would have been much worse. I had maybe a couple of dozen chest hairs. Prior to starting HRT, I'd shave them every so often. Once I started on HRT, they got fewer in number, finer, and are now blonde. I can't even find them unless the light catches them just right.
The hair on my arms is so fine it hardly seems worth doing anything about. Peach fuzz, basically. I shave my legs from time to time, but that hair is pretty sparse.
So I can't claim to be a smoothie, but I seem to have the low-maintenance option.