First updates are critical, they have to have to hook you, which is why I hate when a review mentions potential.
The Big Swap is long for a first update, it not only gets through the initial prologue that sets up the scenario, but also introduces around a dozen different plot threads and even more characters for the future.
It gets all the basics right, good to greatlooking characters, decent writing, a bit of sexy times and it delivers on its core fetish of a man transformed into a woman who is now troubled by the situation they've found themselves in as people want a piece of that curvy body and whether or not they should let them have a slice.
I really enjoyed this initial update, there's a good bit to explore and look forward too, I would say the only thing going forward is that with this many threads, will they balance them all. Also bring on the incest patch.